Question 9. (d) A thin wooden sheet, Question 17. These solutions include answers to all exercise questions given in the NCERT textbook. (b) Sun Required fields are marked *. By covering one side of the glass sheet by butter paper. He rectified Soumens mistake and helped him making another pinhole camera. (a) Pencil Why we do not obtain upside-down image of the Sun through a pinhole camera? Three things are required for the formation of shadow, viz a source of light, an object and a screen. Practice MCQ Questions for Class 6 Science with Answers on a daily basis and score well in exams. Parthivs grandmother looked a little worried today. On the same side if the incidence angle is bigger, the shadow is smaller. (a) star Opaque Object: An object which does not allow passage to light is called an opaque object. The rain shadow effect can typically be seen in mountainous regions due to the flow of the wind. When its curved side faces the shining object, it casts a rectangular shadow. The shape and size of an objects shadow is affected by the positioning of the light source. We can observe the appearance of shadows in the dark because the is light present in what we perceive as dark. (b) translucent objects This happens because the positioning of the sun changes throughout the day as it appears to move from east to west. (d) Wood, Question 13. A shadow is formed when a transparent object comes in the way of light. What are the two types of eclipse? During day time sunlight acts as a source of energy which makes everything visible whereas at night we use artificial sources of light for seeing objects. The shape of a shadow depends upon the shape of the object. Three things are required for the formation of shadow, viz a source of light, an object and a screen. Liquid matter: Water is made up of liquid. If the observer is located within an umbra, then the observer is likely to perceive a total eclipse. Answer: Umbra is the dark region behind the object facing light which does not receive light at all. Question 3. The image formed in water is Sun is the universal source of light. We cannot see through an opaque object. The word antumbra originated from Latin word ante which means before. (a) A thin sheet of paper(b) A thin glass slab(c) A thin iron sheet(d) All of these, (v) Bouncing back of light from shining surfaces is called, (a) Reflection(b) Refraction(c) Bending(d) Dispersion, (a) Image becomes inverted(b) Image bends laterally(c) Right of the object appears left of the image(d) All of these happen, Answer: (c) Right of the object appears left of the image. Question 26. When the earth comes in between the sun and the moon, the shadow of the earth falls on the moon. (d) black, Question 35. A plate or any translucent sheet on the side opposite to the face containing the pinhole serves as a screen. If we try to view the object and the source from the apex of the cone, then the two bodies would seem to be of the same size. The dark patches formed behind an opaque object when it does not allow light to pass through it are called shadows. They are formed due to the converging rays of light that comes after reflecting from objects. Erect and laterally inverted image is formed by a plane mirror. When l = 0.75 or 1, the material flows to the inside of the rivet, and a vortex phenomenon also occurs. (b) A thin paper sheet Answer: Moon does not emit light of its own. Question 13. What type of image is formed by a plane mirror? It allows geologists to analyze the distinguishing geological features and structures, plant cover, past history of the site, soil properties, and topography of the study area. A shadow is always formed on the side opposite to the source of lightwith respect to an opaque object. Question 1. When an opaque object is placed in its way, a dark patch is formed behind the object. (a) Translucent(b) Opaque(c) Transparent(d) Penumbra. It helps us to see the objects from which it comes or from which it is reflected. Turn on the torch and place the object (whose shadow you want to study) in front of it. What are luminous and non-luminous objects? We can clearly see through a transparent object. The shadow we see while in the path of totality is called the umbra, and the shadow of the surrounding partial eclipse is a penumbra. Download Filo and start learning with your favourite tutors right away! Question 10. (b) Sun Answer: WebAerial photograph interpretation is a method of extrapolating geological details of the ground surface from aerial images. Any surface that is really well polished or shiny acts like a mirror. (a) opaque objects Parallel propagation of light. Give suitable examples of each objects. Question 7. (a) inverted WebSun and Venus. Now, Soumen can see the image of the object. Light does not bend its path of propagation if the size of the obstructing object is not comparable to the wavelength of The human monkeypox virus (MPXV) was first identified in 1959. Therefore, it can be said that the two factors are proportional. (b) reflection (c) a straight line Web(i) Shadow: A dark patch formed behind an opaque body, when placed in the path of light. Question 8. Shadows are formed when an object stops light. It is formed when light ray falling on the surface of the mirror (say an opaque object) is blocked by it. Reflection of light. Example: moon. Question 27. These are the objects through which one cannot see properly. Which types of objects do not allow light to pass through them? These are pinhole images of the sun. This creates an area of darkness on the side of the object away from the source of light. Answer: In case if the incidence angle is smaller, shadow is longer. The formation of shadow of one celestial body on the other is known as There are certain artistic methods that use the effects of shadows to create some form of art such as chiaroscuro, sfumato, and silhouette. Answer: Luminous objects: Objects that give out or emit light of their own, e.g., sun, torch, light, bulbs, etc.Non-luminous objects: Objects that do not give out light of their own, e.g., the moon, chair, shoe, pen, etc. (b) light bulb When the object moves, its shadow is likely to expand in terms of dimensions faster than the speed of the objects movements. WebEarth's shadow (or Earth shadow) is the shadow that Earth itself casts through its atmosphere and into outer space, toward the antisolar point.During the twilight period (both early dusk and late dawn), the shadow's visible fringe sometimes called the dark segment or twilight wedge appears as a dark and diffuse band just above the horizon, most Similarly, dust particles become visible when light enters the room through fine hole.All these examples indicate that light travels in straight line. Answer: Its all about contrast. Question 17. (a) transparent object Answer: The antumbra refers to the portion of the shadow from which the obstructing object appears to be placed completely within the central region of the light source. This is the reason why shadows appear to be blue.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'lambdageeks_com-banner-1','ezslot_5',837,'0','0'])};__ez_fad_position('div-gpt-ad-lambdageeks_com-banner-1-0'); We can often observe that the shadows of objects such as chain-linked fences and other objects having similar shapes tend to get inverted i.e. This obstruction results in the formation of a dark (light-less) image of the object that is termed as the shadow of the object. Does the direction of shadow change during the day? Find an answer to your question of light. The most famous story of acoustic shadows effect on human history occurs not once, but pretty frequently throughout the Civil War, causing many historians to assert that this phenomenon had a significant impact on its outcome. there is an opaque object in the way of light. How does light travel? Benign tumors may similarly appear as a shadow or a spot. (a) planets A pinhole camera uses a lens to form a real and inverted image. Question 23. Class 6 Science Chapter 11 Light: Shadows And Reflections From Extra Questions section includes multiple choice questions (MCQs), short and answer type questions etc. (c) eclipse Answer: Moon is a non-luminous body because it shines by reflecting the sunlight falling on it. Once the tube is bent at some angle, it is not possible to see the source of light through it. WebThis forms areas that are lighted, and an area that isn't. (a) transparent objects 3. What is umbra and penumbra? Cot() = L/20mif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'lambdageeks_com-leader-1','ezslot_8',838,'0','0'])};__ez_fad_position('div-gpt-ad-lambdageeks_com-leader-1-0'); Your email address will not be published. Question 22. Soumens teacher asked their class to make a pinhole camera by themselves. (a) Plane mirror(b) Pinhole camera(c) A straight pipe(d) Glass slab. This is known as arectilinear propagation of light. What is a translucent object? The opaque obstructing object is capable of blocking the light coming from sun. Question 30. His elder brother on observing his pinhole camera found that the hole made by him was quite large. (b) translucent Answer: Fig (1): It is used to understand the phenomenon of rectilinear propagation of light. Question 4. (iii) For the formation of shadow there must be Light does not bend its path of propagation if the size of the obstructing object is not comparable to the wavelength of light. Why is silvered glass used as a mirror? Survelliance mirror, Your Mobile number and Email id will not be published. Save my name, email, and website in this browser for the next time I comment. Question 3: Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way? 13. A shadow is formed when. (c) erect but laterally inverted This explains why we cannot see a shadow in the dark. The image which cannot be projected on to a screen is called . (a) luminous A pinhole camera is a simple camera that consists of a light-proof box, a thin film for a screen and a small aperture or hole to allow the passage of light rays. (a) What is solar eclipse? (b) red Whether a shadow is two-dimensional or three-dimensional? (b) shape of object A virtual image is the apparent convergence of diverging light rays. Some of the differences between an image and a shadow are given in Table. (c) red (b) inverted One can see clearly through these objects. Features of Image Formed Due to Reflection. Image source: C. G. P. Grey,British Library Gate Shadow,CC BY 2.0. object. When is a shadow formed? Question 1. Virtual images cannot be obtained on a screen. Answer: The dark area is called a shadow. A shadow exists because the object absorbs the light. An object which does not allow passage to light is called an opaque object. Far the source of light is, smaller is the shadow. It is called shadow education because it mimics the mainstream curriculum. of light. Question 30. (b) Why was Soumen unable to get the image of a well lit object? Question 8. (b) non-luminous A shadow is the cross section of that volume of light in the form of a two-dimensional silhouette, or an inverse projection of the person or the object obstructing the propagation of light in space.Shadow demonstrating transverse reversal effect. there is an opaque object in the way of light. A shadow can be said to be a spot on a surface where the amount of light is less compared to the amount of light the area surrounding that spot. (a) Rectilinear propagation of light The unlighted area is called the shadow. WebA shadow is an exact copy of an object. WebAnswer (1 of 3): Shadows can be very deceptive. Example: moon. An Object through which light is completely passed known as transparent object. A shadow, which is projected over an area at large distances (like light years) is unable to communicate information between the surfaces at such distances with the edge of the shadow. (a) I, O, U(b) N, Z, X(c) I, X, E(d) A, E, I. Question 5. If you stand before a plane mirror, your left hand appears right. Question 5. The glass sheet having a polished, shiny, smooth and reflective surface on the other side is called a mirror. Question 5. Answer: The shadow is formed by the obstruction of light. Answer: Question 4. lateral dispersion reflection rectilinear propagation diversion Viewed by: 0 students Updated on: Feb 19, 2023 1 student asked the same question on Filo Learn from their 1-to-1 discussion with Filo tutors. Mainly there are two types of object based on their light emitting property: Luminous Objects: An object which has a tendency to produce light are known as luminous objects. Benign tumors may similarly appear as a shadow or a spot. (d) Moon, Question 2. WebThe philosophy of perception is concerned with the nature of perceptual experience and the status of perceptual data, in particular how they relate to beliefs about, or knowledge of, the world. Hence, for reflection, shiny surfaces are required. (b) The light ray returning back in the same medium after striking a smooth, shiny and highly polished surface (say a plane mirror) is called reflected ray. Suggest any two ways to do it. Method: Observation: The shadow becomes bigger when the object is moved closer to the torch and smaller when it is moved closer to the screen. The material which allows light to pass through it is Which one of the following is the natural source of light? Shadow is formed due to the phenomenon of rectilineas propryation of light. Undergoes lateral inversion (i.e., left-right reversal). Question 2. Answer: A smooth shining surface, which rebounds the light back in same or in different direction is called a mirror. If you have any other queries of CBSE Class 6 Science Light Shadows and Reflection MCQs Multiple Choice Questions with Answers, feel free to reach us so that we can revert back to us at the earliest possible. Question 28. This phenomenon is known as _________. (c) sometimes erect, sometimes inverted Do you notice any difference? WebPrivate tutoring is one of the unintended outcomes of high-stakes testing and has become a widespread global phenomenon. (a) On which principle of light does a pinhole camera works? During sunset and sunset when the angle of elevation is equal to almost 0and therefore the cotangent of the elevation angle() becomes equal to . Answer: The area in shadow appears black because there is no light falling on it. Source of light which is prepared by humans is known as man made source of light. Only opaque objects can make shadows, e.g., wall, blackboard, stone, etc. E.g. (a) Electric bulb(b) Burning candle(c) Firefly (Jugnu)(d) Oil lamp. (a) luminous The object is required to be opaque for shadow formation to take place. If an opaque (solid) object gets in the way, it stops light rays from traveling through it. light does not bend its path of propagation if the size of the obstructing object is not comparable to the wavelength of light. the contrast between the shadow and the surrounding area is much more and therefore, we can clearly see the shadow formation. and . Question 24. It is always either large or the same size as that of the object. Right side of the object appears to be left in image and vice-versa. (b) a coloured image WebShadow refers to the dim areas adjacent to buildings or features which are generated by the solar rays and the position of the Sun. [1] [6] It can be used for the analysis of some small village houses. We cannot see through an opaque object. Example: Sun. E.g. Define a pinhole camera. Mirrors do not allow even a small amount of light to pass through them. Answer: Shadow is formed due to the phenomenon of rectilineas propryation of light. Question 1. Aim: To observe differences between the image and the shadow of the same object. (ii) Light always travels in straight lines. Question 9. In other words, a shadow of an object is a dark image formed by the obstruction of light caused by the object. Answer: Those objects which allow only a small part of the light rays to pass through them are called translucent objects. What is a luminous object? Natural Source of Light: Source of light which is already present in nature known as natural source of light. Answer: Correct Answer: Lateral inversion. (d) shining mirror, Question 36. Question 26. Question 3. (d) none of these, Question 29. Afterwards rounded shaped images are formed on the earth. (d) colour of the source light, Question 22. Even though we perceive the shadows edge to travel along a wall, in reality the increase in the length of a shadow is due to a new projection that travels at a speed equal to the speed of light from the interfering object. Answer: (c) light bulb . (c) both (a) and (b) (b) translucent and List four natural sources of light.Answer: Question 12. Does the length of shadow also change from season to season? On what factor does the proportion of light that enters an object depend? (a) size of object Answer: When a ray of light falls on a smooth and shiny surface, the whole of light is sent back in the same medium. Give examples of two substances through which light does not pass? (d) none of these, Question 4. (c) both of these Question 6. Glass sheet is a/an The size of the umbra and penumbra depends on various factors such as the size of the source, size of the object, and the distance between the source and the object as well as the distance between the object and the screen. A shadow is formed when light hits an opaque object which stops the rays of light from passing through it. In this page, we are providing Light Shadows and Reflection Class 6 Extra Questions and Answers Science Chapter 11 pdf download. The size of shadow totally depends on distance between object Question 22. Question 29. (a) blue Answer: Mirror is silvered on one side, so it does not allow the light to pass through it. Q. Light travels in a _________ line. To know more about Light Energy, visit the link below; Light takes the quickest path between any two points. Gives the details as well as the outline of the object. What do you see? Based on the size of the light, the sharpness of shadow is observed. Shadows are formed because the movement of particles travels in light. Similar to the sunlight, the particles travel and choose a destination. If the destination is an opaque substance, it creates a blurred image based on the object's size. What is lateral inversion? image. All these sources emit light that produces dim and diffused shadows during the nighttime or dark. When an opaque object comes in the way of light it makes How come there are still shadows in the dark? Translucent Object: An object which allows partial passage to light is called a translucent object. (a) inverted Question 7. A shadow comes from within a living thing and follows it around. b. Answer: It reflects almost whole of the light falling on it. Answer: (d) all of these, Question 38. "There are two In objects like chain-link fences, at first the shadows appear to be like diamonds and the outline of shadow appears to be touching the fence, but as the distance between the object and the surface of shadow projection increases, the shadow appears to be blurred. Answer: Answer: Yes, the direction of shadow changes as the sun changes its position during the day. Question 18. (c) surface It is called shadow education because it mimics the mainstream curriculum. a swap occurs between the light and dark areas when the object gets farther from the surface of the projection. Answer: Shadows will always be formed on the opposite side of the light source. What happens when light falls on a mirror? The endemic regions were identified in Africas central and western areas. (d) What value of Parthiv is shown here? MCQ Questions for Class 10 Science Chapter 1 Chemical Reactions and Equations with Answers, Determiners Exercises for Class 10 CBSE With Answers, NCERT Solutions for Class 10 English First Flight Chapter 4 From the Diary of Anne Frank, NCERT Solutions for Class 9 Social Science Geography Chapter 2 Physical Features of India, Concise Mathematics Class 10 ICSE Solutions. The sun, firefly, stars and fire. Question 10. Reflection occurs mainly on the mirror surface as incident light gets reflected when it falls on a clear surface and due to reflection the image formed is always erect. Answer: Question 4. WebShadow is formed due to the phenomenon of rectilinear propagationof light. Question 10. A shadow is formed when an opaque object is placed in the path of light. The size of a shadow is relative to the __________ of source of light with respect to the object. A pinhole camera is a device which casts a photographic image of a bright object on a screen. Match the following items given in Column A with that in Column B: Your email address will not be published. This spreading out is called diffraction. The partial dark region of a shadow around the umbra that gets light from some parts of the source of light is called the penumbra. When l = 0.75 or 1, the material flows to the inside of the rivet, and a vortex phenomenon also occurs. This seeming left-right reversal is called lateral inversion. Hold the screen on the other side of the object to get the shadow. The phenomenon of light bouncing off surfaces is called reflection. (b) long Question 17. (c) sun Close your eyes while looking towards bright sunshine. (c) translucent Images have colour, unlike shadows. With light coming from a very small source, the shadow's edges are clear and the shadow is well-defined. Question 5. The image formed by a pinhole camera is erect. It works on the principle that light travels in a straight line. Question 16. (b) straight line 1) Ipre early maan uralked on floot and Carried loadle on his leane. Answer: The light comes back in the same plan when light falls on a shiny surface. (d) none of these, Question 40. Which is an example of a translucent object? An area of darkness formed by an opaque object obstructing light is called a shadow. On the other hand, (ix) Which of the following is a cold source of light? An aortic aneurysm is a defect that causes an enlargement of the aorta as it leaves the heart or as it begins to descend through the chest. Question 3. Question 16. (a) transparent object On this screen is a dark patch, or shadow, with the same outline as the object surrounded by light. A rain shadow forms when moist winds head towards a set of mountains and get forced upwards by them. An opaque object blocks the light falling on it. Pinhole cameras consist of a closed box having a small pinhole in the front and having translucent screen at the back. Give four examples of translucent object. (c) star How does the colour of an opaque object affect the colour of the shadow? On the basis of ability to pass light through an object, objects are classified into three main groups, i.e., Answer: Answer: Image formed by a pinhole camera is _________ down. Shadow. This dark region is called a shadow. 1. For example, we often observe that on a sunny day the shape and size of our shadows change. Question 6. To know more about Transparent, Opaque and Translucent Objects, visit the link below; To know more about Shadow Formation, visit the link below; To know more about Pinhole Camera, visit the link below; A mirror is a surface usually consisting of a glass that reflects light incident on it to form clear erect images. (a) a curved line This property of shadows has proved out to be very useful for long aided travelers. Question 11. (b) translucent Air and water are It only shows the shape or outline of the object and not the details. Answer: We may say that clouds behave as translucent object. Sun is a source of shadow to form. A shadow is formed when the sun's rays are traveling in your straight line towards the earth. The rays of the sun radiate outwards and these light rays travel nearly 300,000 km/sec in a straight line towards the earth. These light rays take only 8 minutes to reach us. It directly touches the path on the ground. What type of images are formed by a pinhole camera? Question 4. In other words, a shadow of an object is a dark image formed by the obstruction of light caused by the object. Shadows only occur outside. Example: Sun. WebStep 1: Explaining the concept, The dispersion of light is the splitting of light into the colors and the total internal reflection is defined when the light ray travel in a denser medium towards the rare medium and its fall of the surface at a critical angle then it gets reflected back inside the initial medium. Answer: Question 5. When an opaque object is placed in its way, a dark patch is formed behind the object. 12.Shadow is formed due to the phenomenon of a. Answer: Because they reflect light from the sun. The shape of shadow depends upon the (a) shape of the object (b) size of the object (c) size of source of light (d) colour of the source light Answer Question 22. Pinhole camera is used to study the moving objects also. (d) beam of ray. The objects which do not allow light to pass through them are called translucent objects. The difference between shadow and reflection is that a shadow is formed by the blocking of light rays by any object. Even during the night time which we perceive to be dark there is light from various sources like stars, the moon, street lights, and ambient city lights reflecting off clouds, etc. These two regions in shadows are formed when an opaque body is placed in front of an extended or slit source. (c) Copper Air is Contrary to popular belief, the shadow is not entirely dependent on the size and the shape of the object. there is an opaque object in the way of light. Then an image is observed similar to the one given : We observe that the light gets reflected from this mirror and it travels in straight lines. Write down four man-made sources of light.Answer: Question 14. Comment * document.getElementById("comment").setAttribute( "id", "a48c0a960721585bce44af6013fbdd56" );document.getElementById("d36cc5d9b1").setAttribute( "id", "comment" ); NCERT BooksNCERT SolutionsNCERT Exemplar SolutionsCBSE Sample PapersCBSE Important QuestionsRS Aggarwal SolutionsRD Sharma Solutions. Question 9. The effective embedded material volume on the bending side of the rivet determines the strength of the What are the different types of object based on their ability to pass the light? Answer: We can see through a translucent object but the vision would be murky. The length of the shadow also changes from season to season. The phenomenon due to which light returns back after striking a highly polished surface is called _________ of light. Why do we need a shiny surface for reflection? The colour of the opaque object does not affect the colour of the shadow that is formed. Are traveling in your straight line towards the earth is well-defined caused by the of. 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