(a) transparent object A shadow refers to a dark real silhouette of a person or an opaque object that is generated when the object or person obstructs the light coming from a light source. On what factor does the proportion of light that enters an object depend? Question 8. (c) sometimes erect, sometimes inverted Lung cancer may appear as a shadow, with or without a well-defined nodule or mass. Question 2. What type of images is formed by it? Question 3. This enables us to see images. Question and Answer forum for K12 Students. Answer: This is known as arectilinear propagation of light. (d) none of these, Question 15. (c) long Total classes on Filo by this tutor - 2948, Connect with 50,000+ expert tutors in 60 seconds, 24X7. We know that light propagates in a straight line i.e. (d) none of these, Question 16. Some common examples of sources of light are sun, bulb,etc. (c) translucent objects (c) opaque objects (c) Tube light A shadow has the following three characteristics: A very interesting phenomenon occurs when an object forms an image by reflection. Transparent Object: An Object through which light is completely passed known as transparent object. A smooth, polished reflecting surface is called a mirror. A translucent object also creates a faint area of darkness. Question 2. Turn on the torch and place the object (whose shadow you want to study) in front of it. This explains why we cannot see a shadow in the dark. Question 15. If an opaque (solid) object gets in the way, it stops light rays from traveling through it. Question 24. Refer to the Light Shadows and Reflection Class 6 MCQs Questions with Answers here along with a detailed explanation. Therefore, light travels in a straight line. Pinhole camera is made up of translucent butter paper. (a) transparent In case if the incidence angle is smaller, shadow is longer. The human monkeypox virus (MPXV) was first identified in 1959. These two regions in shadows are formed when an opaque body is placed in front of an extended or slit source. Question 10. Question 5. Pinhole camera is made up of translucent butter paper. Question 18. Question 12. During sunset and sunset when the angle of elevation is equal to almost 0and therefore the cotangent of the elevation angle() becomes equal to . (a) Transparent Answer: No light enters the eye from the shadow of the object. How are moon and planets visible to us, though they are not luminous? Answer: With light coming from a very small source, the shadow's edges are clear and the shadow is well-defined. Since May 2022, Question 1. (a) luminous A mirror reflects a beam of light. Answer: We need the following in order to see a shadow. Answer: Light is the energy that enables us to see. RD Sharma Solutions , RS Aggarwal Solutions and NCERT Solutions. E.g. Shadow is formed when light falls on the opaque body. there is an opaque object in the way of light. Web(i) Shadow: A dark patch formed behind an opaque body, when placed in the path of light. Required fields are marked *. Find an answer to your question of light. An object which does not have its own light is called a non-luminous object, e.g., chair, moon, etc. Answer: In a dark room, we can see with torch light which goes straight. (a) shape of the object Benign tumors may similarly appear as a shadow or a spot. Can you think of a situation where we can see the path of the light? An opaque object blocks the light falling on it. (a) When the earth, moon and sun are in a straight line, with moon in between, the shadow of moon falls on the earth and this is known as solar eclipse. Contrary to popular belief, the shadow is not entirely dependent on the size and the shape of the object. Question 17. Ask your friend to trace out the outline of the shadow on the screen. (b) long What is reflected ray? Question 11. 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. Why is the image formed in a pinhole camera inverted? (a) Torch Compare it with your image as you see it in a mirror. Dark patches are produced when light is stopped by opaque objects. Butter paper is a . 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. The image formed by a plane mirror is erect but laterally inverted. This creates an area of darkness on the side of the object away from the source of light. there is an opaque object in the way of light. The dark patch formed due to obstruction of light rays by an opaque object is called a shadow. Question 25. The light ray which returns after striking a smooth surface is called incident ray. They are formed due to the converging rays of light that comes after reflecting from objects. Question 4. Question 1. (b) opaque Question 2. (c) sometimes long sometime circular Answer: The inner region of a shadow which is completely dark is called umbra and the outer region surrounding the umbra which is a partially dark region is called penumbra. Question 28. Name some luminous objects. Parallel lines are two straight lines that are always the same distance apart. Image is seen when light coming from the object after reflection or refraction enters the observess eye. What is a luminous object? Since then, the incidence of the disease has been sporadic. What is umbra and penumbra? A pinhole camera is a device which casts a photographic image of a bright object on a screen. Example: moon. The following three things are required for a shadow to form (Fig. All the space behind the opaque object up to some distance behind it seems to be filled with the shadow. 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. Light travels in Question 24. 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. What is a pinhole camera? Translucent Object: An object which allows partial passage to light is called a translucent object. the phenomenon of bouncing back of light by a highly polished surface is called reflection. Question 17. An object which does not allow light at all to pass through it, is called opaque object, e.g., wooden sheet, wall, etc. (vii) Which letters of English alphabet will not show lateral inversion? What are luminous and non-luminous objects? The colour of opaque objects affect the dark colour of the shadow. (c) Yes, many a times by my grandmother. Question 14. No, the colour of the object does not affect the colour of the shadow. Answer: What is reflection? Light rays travel from a source in straight lines. (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. (c) opaque object Once the tube is bent at some angle, it is not possible to see the source of light through it. Answer: (b) red Which of the following is a non-luminous object? Shadow of an object is Objects can be classified based on their interaction with light. List four natural sources of light.Answer: Question 12. Example: bulb, candle, torch, etc. Filo instant Ask button for chrome browser. Sun rays falling on a flying bird form shadow in space. Light is a form of energy which when falls on the object enables us to see them. (b) opaque object For example, consider a TV screen. This happens because the positioning of the sun changes throughout the day as it appears to move from east to west. Plywood sheet is a/an Answer: (d) none of these, Question 11. Answer: WebA shadow is formed when an opaque object blocks the path of light because light travels in straight lines.Light cannot bend around the object so it forms a shadow. Give four examples of transparent objects. All the planets and the moon are the . Shadow is formed by an object by obstructing light so that it doesnt reach a surface. On the basis of this experience, state whether your eyelids are transparent, translucent or opaque. Question 26. The area in shadow appears black because there is no light falling on it. 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. The objects which do not allow light to pass through them are called translucent objects. : Butter paper, Opaque objects do not allow any light to pass through them. Learn about the definition of a rain shadow and see how it is formed by several natural factors. Q.1 llaito a shert mole sin the finstory iof doumesfert? The formation of shadows by celestial bodies on one another is called an eclipse. (c) opaque In the picture above, we can see that the shadow of an opaque object (ball) is formed on the screen when the object is placed in front of an extended source of light. (a) inverted The human eye acts very much like a pin-hole camera. A shadow is formed when there is a source of light. Does the colour of the object affect the colour of the shadow? Three things are required for the formation of shadow, viz a source of light, an object and a screen. and . Question 6. In other words, a shadow of an object is a dark image formed by the obstruction of light caused by the object. (a) On which principle of light does a pinhole camera works? (a) luminous Shadow is formed due to the phenomenon of rectilineas propryation of light. We have grown leaps and bounds to be the best Online Tuition Website in India with immensely talented Vedantu Master Teachers, from the most reputed institutions. Stars are (b) blue It can cause a shadow on chest X-rays. Question 1. (d) none of these, Question 33. Question 2. E.g. The plane mirror shines due to the silver coating. lateral dispersion reflection rectilinear propagation diversion Viewed by: 0 students (b) translucent object There are certain artistic methods that use the effects of shadows to create some form of art such as chiaroscuro, sfumato, and silhouette. In this article, we will discuss about shadow formation, umbra and penumbra, characteristics of shadows. (c) Sun 1. How will you convert a transparent glass sheet into a translucent sheet? What type of images is formed by it? (d) none of these, Question 5. WebThe shadow is formed by the obstruction of light. (b) A thin paper sheet The image formed in water is The generation of complex multicolored shadows is observed by visual artists that generally arise from colored light emitted or reflected back from different sources. It is to be noted that the communication between different points in a shadow does not exist except for the phenomenon of reflection or interference of light which occurs at the speed of light. Which of the following is a luminous object? The sky appears to be blue in color due to the same property. The size of a shadow depends on the size of the object. It is time to put your knowledge to the test by answering a few questions. Shadow. What is a shadow? Answer: Those objects which allow light rays to pass through them completely are called transparent objects. Question 2. Table, chair, blackboard and notebook. If you stand before a plane mirror, your left hand appears right. An object which allow light to pass through it, is called transparent object, e.g., clear glass, water, etc. Required fields are marked *. Your email address will not be published. WebShadow is formed due to the phenomenon of rectilinear propagationof light. We can often observe that during daytime, a shadow of an opaque object illuminated by sunlight appears to have a bluish shade. The endemic regions were identified in Question 6. WebAerial photograph interpretation is a method of extrapolating geological details of the ground surface from aerial images. Parallel lines are two straight lines that are always the same property to phenomenon! 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