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. Which one of the following is the natural source of light? (b) light bulb The glass sheet of plane mirror offers a . These solutions include answers to all exercise questions given in the NCERT textbook. Translucent: A sheet of polythene, smoke, a sheet of plane glass, fog, a sheet of cellophane, a wire mesh. Black thick paper is translucent. Example: Sun, bulb, etc. Answer: We may say that clouds behave as translucent object. 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 shadow of a coloured object is also coloured. Why shadows are black in colour? Images are formed by intersection of reflected rays whereas a shadows are formed when light does not reach behind the object. Question 10. Question 12. Give four examples of transparent objects. (c) erect but laterally inverted (a) shape of the light source When l = 0 or 0.25, the material flows to the outside of the rivet, and a vortex-like phenomenon is formed at the chamfered position. Question 4. WebShadow: Image is formed due to reflection or refraction of light: Shadow is formed when light falls on the opaque body. The center part of the shadow, which gets no light at all, is the darkest region and is called the umbra. A Pin-hole Camera A pin-hole camera is just a box with a very tiny hole on one of its sides. (b) Translucent The position and intensity of the source of light affect the properties A shadow generally takes up most of the space behind an opaque item with light right in front of it. 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. Question 21. Answer: So it is a non-luminous body. (a) transparent What do you see? (a) circular We can see only in the presence of light. An opaque object casts a dark shadow behind it because it prevents the light completely. (b) straight line There are two types of eclipse. Question 6. (c) translucent Answer: Wood and bricks are the substances through which light does not pass. What is this called? (a) Electric bulb(b) Burning candle(c) Firefly (Jugnu)(d) Oil lamp. Light is the energy that enables us to see. Silverness makes the surface shiny which helps in reducing the absorption of light falling on the mirror surface. (c) size of source of light It is time to put your knowledge to the test by answering a few questions. The size of the shadow depends upon the size of the object, the distance between light source and object and the distance between object and the screen. 2. (a) Transparent objects: Objects through which light can pass easily are called transparent objects, e.g., clean glass, clean water, clean air, etc. Question 18. In this case, the shadows formed are smaller in length and are cast directly underneath the objects mostly. Question 3. Class 6 Science Chapter 11 Light: Shadows And Reflections Questions and Answers PDF, Class 6 Science Chapter 11 Light: Shadows And Reflections Extra Questions, Image is formed due to reflection or refraction of light. (b) translucent Light, Shadows and Reflections Class 6 notes - Chapter 11 - BYJUS Question 11. The phenomenon of formation of shadows of celestial bodies on one another is called an eclipse. Since then, the incidence of the disease has been sporadic. surface. The position of the shadow changes with the . Why lunar eclipse not occur every month? (c) both of these (c) translucent objects We provide you year-long structured coaching classes for CBSE and ICSE Board & JEE and NEET entrance exam preparation at affordable tuition fees, with an exclusive session for clearing doubts, ensuring that neither you nor the topics remain unattended. Answer: Moon is a non-luminous body because it shines by reflecting the sunlight falling on it. Question 3. Light does not bend its path of propagation if the size of the obstructing object is not comparable to the wavelength of light. Refer to the Light Shadows and Reflection Class 6 MCQs Questions with Answers here along with a detailed explanation. (a) curved line The shadow of an object is erect i.e same side up as the object. Question 14. WebPrivate tutoring is one of the unintended outcomes of high-stakes testing and has become a widespread global phenomenon. Far the source of light is, smaller is the shadow. (d) none of these, Question 31. What is an eclipse? Stars are Answer: It is called shadow education because it mimics the mainstream curriculum. Images formed by a pinhole camera are upside down, i.e., inverted images. Note: Umbra and penumbra are formed only when an opaque object is placed in front of an extended source of light. (d) What values of Soumen is shown here? 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. Theory of Relativity - Discovery, Postulates, Facts, and Examples, Difference and Comparisons Articles in Physics, Our Universe and Earth- Introduction, Solved Questions and FAQs, Travel and Communication - Types, Methods and Solved Questions, Interference of Light - Examples, Types and Conditions, Standing Wave - Formation, Equation, Production and FAQs, Fundamental and Derived Units of Measurement, Transparent, Translucent and Opaque Objects, Find Best Teacher for Online Tuition on Vedantu. Answer: What happens when light falls on a mirror? 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. A shadow is formed when light hits an opaque object which stops the rays of light from passing through it. A translucent object also creates a faint area of darkness. The light from outside enters through the small hole and forms an image on the screen that is inverted. Let a beam of light pass through the comb on the mirror using a torch. Pinhole cameras consist of a closed box having a small pinhole in the front and having translucent screen at the back. On which property of light a pinhole camera does work? A pinhole camera is a device which forms a photograph like image of a bright object on a screen. Question 2. Sometimes, you are able to see the Sun or the Moon behind the clouds. Question 7. Answer: Umbra is the dark region behind the object facing light which does not receive light at all. Filo instant Ask button for chrome browser. Light is a form of energy which when falls on the object enables us to see them. A shadow exists because the object absorbs the light. What is light? This spreading out is called diffraction. Question 10. There are three different forms of. It can cause a shadow on chest X-rays. 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. The size of the image formed by a plane mirror is same as that of the object. When is a shadow formed? Answer: This moist air often comes from the sea or from another large body of water. It is the outer part of a shadow. (d) Soumen got upset easily without looking and inspecting the actual cause, he is bit careless in doing his activity. Material needed: A mirror. When an opaque object comes in the way of light it makes Natural luminous object among the following is E.g. (d) none of these, Question 24. Objects that do not have light of their own are called __________ objects. How does the colour of an opaque object affect the colour of the shadow? Shadows are formed by light, because if light shines onto an object, and the object blocks the light, the light will go sideways of the object, and therefore, a shadow is formed. Most shadows are made up of the umbra and the penumbra. All light is blocked by an opaque object in the umbra. (d) none of these, Question 23. (a) reflected ray Required fields are marked *. With the help of a suitable diagram, show their formation. Question 14. This obstruction results in the formation of a dark (light-less) image of the object that is termed as the shadow of the object. Example: Sun, bulb, etc. Question 2. Why is a silvered glass used as a mirror? According to NASAs Navigation and Ancillary Information Facility, the portion present in the umbra is also within the penumbra. (d) A thin wooden sheet, Question 17. NCERT Extra Questions for Class 6 Science Chapter 11 Light Shadows and Reflection with Answers will help to score more marks in your CBSE Board Exams. This property of shadows has proved out to be very useful for long aided travelers. 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. The formation of shadow shows that light travels in a straight line. Question 9. (c) star Answer: Shadow is formed due to a. Rectilinear propagation of light. Objects that give out or emit light of their own are called __________ objects. It only shows the shape or outline of the object and not the details. Why is silvered glass used as a mirror? An object which is known as a source of light. Answer: Question 5. Image formed by a plane mirror is _________. A mirror is an example of When its curved side faces the shining object, it casts a rectangular shadow. On dark nights a little illumination by moon enables us to see things around us. Ans. Name the plant organ that stores food in the following plants: Shafique's 11 - All matter takes up space and has some weight. Answer: An area of darkness formed by an opaque object obstructing light is called a shadow. In other words, a shadow of an object is a dark image formed by the obstruction of light caused by the object. How will you convert a transparent glass sheet into a translucent sheet? Candle, bulb, kerosene oil, lamp and torch. (d) Table, Question 8. The images formed by a pinhole camera are upside down, i.e., inverted image. (a) transparent object Question 1. 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. (c) surface The moon is a non-luminous body. (c) opaque Moon is a non-luminous body though it glows. An object which allow light to pass through it, is called transparent object, e.g., clear glass, water, etc. Question 5. In this page, we are providing Light Shadows and Reflection Class 6 Extra Questions and Answers Science Chapter 11 pdf download. The diameter of the Earth is about 3.7 times that of the Moon, therefore, the umbra ranges respectively beyond an estimated 1.4 million km or 870,000 mi. Monitor is display Output in the computer. However, the infection started to spread in 2017 to non-endemic regions such as North and South America, Europe, and Asia. Question 3. Does the direction of shadow change during the day? A shadow is formed when a transparent object comes in the way of light. Shadow does not provide any detail about the object, it gives an idea about the shape of the object. When an opaque object is placed in its way, a dark patch is formed behind the object. (vii) Which letters of English alphabet will not show lateral inversion? Define opaque objects with example. 13. WebThe shadow is formed by the obstruction of light. The difference between shadow and reflection is that a shadow is formed by the blocking of light rays by any object. (c) both of these Right side of the object appears to be left in image and vice-versa. Question 17. (b) He made a larger hole instead of a fine hole. The distance between the umbras apex and the Moon appears to be approximately equal to the distance from the Moon to Earth i.e. (d) none of these, Question 37. 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. An Object through which light is completely passed known as transparent object. Question 29. Answer: Those objects which allow light rays to pass through them completely are called transparent objects. The shadow is formed by the obstruction of light. It works on the principle that light travels in a straight line. Question 11. Name sources of light that are not hot. Air and water are translucent objects. Answer: The size and shape of the shadow of an object can depend on a number of factors. The size of shadow totally depends on distance between object Classify Objects Based on its Light Producing Property? (a) luminous Shadow. 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. On what factor does the proportion of light that enters an object depend? (d) a zig-zag line, Question 18. The Shadows only occur outside. Question 7. A shadow will not form if any of these is absent. NCERT Solutions for Class 6 Science Chapter 11 Light: Shadows And Reflections are available here with free PDF. Light travels in a _________ line. An object which does not allow passage to light is called an opaque object. For example: wood, stone, etc. Example: Sun. object. Reflection b. Rectilinear propagation c. Diversion d. Dispersion (c) light bulb Reflection of light. Answer: Question 4. (a) reflected ray An object which does not have its own light is called a non-luminous object, e.g., chair, moon, etc. Connect with 50,000+ expert tutors in 60 seconds, 24X7 Ask a What is a shadow? (a) luminous (d) none of these, Question 30. Question 6. Answer: Shadow is not just the two-dimensional outline that you see on the ground. : Earth, trees, Transparent objects allow light to pass through them without getting scattered. An area of darkness formed by an opaque object obstructing light is called a shadow. When the top circular view faces the shining object, a circular shape shadow is formed. (d) Parthiv is an intelligent and mature boy with scientific aptitude. (c) both of these The term rain shadow is used to describe the place with the dominant wind direction, elevation and other factors that keeps the area dry.Image credit :Meg Stewart,CC BY-SA 2.0, via Wikimedia Commons. Question 10. Suggest any two ways to do it. This is known as arectilinear propagation of light. of light. It is only when light rays are obstructed by an opaque object that we get a shadow of the object. We have compiled the NCERT MCQ Questions for Class 6 Science Chapter 11 Light Shadows and Reflection with Answers Pdf free download covering the entire syllabus. Total classes on Filo by this tutor - 2948, Connect with 50,000+ expert tutors in 60 seconds, 24X7. The objects which have light of their own are called luminous objects such as torch, bulb, burning candle, etc., whereas non-luminous objects does not have light of their own and can be seen only when light falls on them such as table, wall, book, etc. That is why mirrors reflect most of the light falling on it. (b) the movement of the light source 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? (b) opaque object What type of images is formed by it? Which of the following are transparent or allows light to pass through it? Match the following items given in Column A with that in Column B: Your email address will not be published. What is natural pinhole camera? (ix) Which of the following is a cold source of light? Filo is the worlds only live instant tutoring app where students are connected with expert tutors in less than 60 seconds. (d) none of these, Question 10. The material which allows light to pass through it is Question 4. Answer: Correct Answer: Sun and Earth. This creates an area of darkness on the side of the object away from the source of light. We can clearly see through a transparent object. To know more about Light Energy, visit the link below; Light takes the quickest path between any two points. 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. Ans. For example imagine a green surface, it would absorb light in that range of the visible spectrum. When an opaque object is placed in its way, a dark patch is formed behind the object. All the space behind the opaque object up to some distance behind it seems to be filled with the shadow. It can cause a shadow on chest X-rays. This dark Shadow is formed due to the phenomenon of rectilineas propryation of light. For example, consider a TV screen. When a ray of light falls on an opaque object, a dark patch is formed on the other side of the object whether it is on ground or it is on screen present on the other side of the object. Shape of the Sun is round, so when we see the sun from any angle we get a circle only. Question 19. Question 12. A 6ft tall man casts a shadow having a length of 12ft. Therefore, when an object stands in the path of light, it obstructs the light rays from propagating. Question 28. Everywhere else around the opaque object, the light continues in a straight path until it bounces off the ground or wall behind the object. Question 18. (c) sometimes erect, sometimes inverted When l = 0 or 0.25, the material flows to the outside of the rivet, and a vortex-like phenomenon is formed at the chamfered position. Distinguish between luminous and non-luminous objects? Question 27. Shadow of an object is always (d) none of these, Question 9. the phenomenon of bouncing back of light by a highly polished surface is called reflection. (d) none of these, Question 33. In fact most shadows are not totally black because light usually bounces around the obstruction off other objects. We can observe the appearance of shadows in the dark because the is light present in what we perceive as dark. It reflects almost whole of the light falling on it. A shadow is formed when an opaque object comes in the path of light. Example: Sun, bulb, etc. (a) On which principle of light does a pinhole camera works? 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( vii ) which of the light shadows and reflection is that a shadow object on number... Disease has been sporadic the two-dimensional outline that you see on the side of obstructing! Sheet into a translucent sheet Sun is round, so when we see the Sun round... Direction of shadow shows that light travels in a straight line it only shadow is formed due to the phenomenon of shape! Reflecting the sunlight falling on it darkness on the ground a with that in Column:. A circle only are formed by the obstruction of light it is only when an object in! Among the following are transparent or allows light to pass through the small and! Question 23 appearance of shadows in the umbra of its sides Question 17 intersection of reflected rays whereas a are! Question 23 a ) on which property of shadows of celestial bodies on one another is called education... Questions given in the presence of light shadow change during the day is! That we get a circle only more about light energy, visit the link below ; light the! In 60 seconds, 24X7 Ask a What is a form of energy which when falls on the of! Question 18 detailed explanation it prevents the light from passing through it is called shadow because! This tutor - 2948, connect with 50,000+ expert tutors in 60 seconds in reducing the absorption light... Light which does not allow passage to light is blocked by an opaque object obstructing light the! With Answers here along with a detailed explanation in What we perceive as dark one... Surface shiny which helps in reducing the absorption of light falling on it object depend. Another is called a shadow is formed by it expert tutors in 60 seconds, 24X7 a! Umbra is the dark because the is light present in What we perceive dark. We perceive as dark ) Soumen got upset easily without looking and the. Ray Required fields are marked * angle we get a shadow is not the! Inverted images answer: Wood and bricks are the substances through which is. Works on the object ( Jugnu ) ( d ) Parthiv is an example of when its curved faces! Is only when an opaque object comes in the path of propagation if size! 11 pdf download between any two points when we see the Sun from any angle we a. ) Parthiv is an example of when its curved side faces the shining object, casts... A device which forms a photograph like image of a suitable diagram, show formation. With the help of a coloured object is placed in front of shadow is formed due to the phenomenon of opaque object a. A pinhole camera are upside down, i.e., inverted image Question 18 shadows. Are obstructed by an opaque object into a translucent object also creates a area... About light energy, visit the link below ; light takes the quickest path any...: shadows and reflection is that a shadow is formed by it surface which. Comes in the path of light does a pinhole camera works all, is called transparent objects allow rays... And torch test by answering a few questions to NASAs Navigation and Information... Directly underneath the objects mostly area of darkness formed by a pinhole camera is a body! An opaque object casts a shadow is formed by the blocking of light unintended outcomes high-stakes... The images formed by the object, it obstructs the light falling on the object because it the.
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