Monitor is display Output in the computer. the light ray falling on the opaque object is blocked by it. Question 12. Question 8. Afterwards rounded shaped images are formed on the earth. All the planets and the moon are the . Compare it with your image as you see it in a mirror. Glass sheet is a/an Shadows are formed when an object stops light. Question 9. A shadow generally takes up most of the space behind an opaque item with light right in front of it. This phenomenon of bouncing back of light is known as reflection. It helps us to see the objects from which it comes or from which it is reflected. There are certain artistic methods that use the effects of shadows to create some form of art such as chiaroscuro, sfumato, and silhouette. Even if you look around you then you will find many things that have shadows such as trees, buildings, furniture etc. What are the different types of object based on their ability to pass the light? (d) none of these, Question 32. What type of images are formed by a pinhole camera? (a) shape of the light source This explains why we cannot see a shadow in the dark. What is natural pinhole camera? about 384,402 km or 238,856 mi. What is an incident ray? a bright ring of light enclosing the eclipsing body. (a) erect Answer: On the basis of the experience, we observe our eyelids are opaque. Printer is used to print in the computer. Natural Source of Light: Source of light which is already present in nature known as natural source of light. (a) a shadow Question 5. Answer: Umbra is the dark region behind the object facing light which does not receive light at all. When the earth comes in between the sun and the moon, the shadow of the earth falls on the moon. the sunlight falls normally or orthogonally on the object (this is possible only in the region between the Tropic of Capricorn and Tropic of Cancer), then the angle of elevation becomes equal to 90, and cot() = 0. Fig (1): It is used to understand the phenomenon of rectilinear propagation of light. (c) both of these Question 14. Note: Umbra and penumbra are formed only when an opaque object is placed in front of an extended source of light. (a) transparent animed annimals reat to carey fis leado. (a) image : Butter paper, Opaque objects do not allow any light to pass through them. . Connect with 50,000+ expert tutors in 60 seconds, 24X7 Ask a Focusing in required in a pinhole camera. Question 30. (b) size of the object WebThis forms areas that are lighted, and an area that isn't. Question 3. (c) translucent objects What do we need in order to see a shadow? Plastic is opaque but glass is _________. Philosophers distinguish internalist accounts, which Tamilnadu Board Class 10 English Solutions, Tamilnadu Board Class 9 Science Solutions, Tamilnadu Board Class 9 Social Science Solutions, Tamilnadu Board Class 9 English Solutions, MCQ Questions for Class 6 Science with Answers, MCQ Questions for Class 6 Science Chapter 10 Motion and Measurement of Distances with Answers, MCQ Questions for Class 6 Science Chapter 12 Electricity and Circuits with Answers, The Hundred Dresses Part 2 Class 10 MCQ Questions with Answers English Chapter 6, What Is Modernism In Literature? (b) non-luminous Question 5. (c) Tube light The image formed by a mirror is due to _________ of light. The term Shadow is frequently used for any form of obstruction or blockage and not just the obstruction of light. Answer: These solutions include answers to all exercise questions given in the NCERT textbook. The moon is a non-luminous body. Hold the screen on the other side of the object to get the shadow. Ask your friend to trace out the outline of the shadow on the screen. Refer to the Light Shadows and Reflection Class 6 MCQs Questions with Answers here along with a detailed explanation. The glass sheet of plane mirror offers a . Question 8. Light does not bend its path of propagation if the size of the obstructing object is not comparable to the wavelength of light. Answer: (a) transparent Web(i) Shadow: A dark patch formed behind an opaque body, when placed in the path of light. An object which is known as a source of light. (b) size of object 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 19. As when light falls on an object, light gets reflected and this reflected light comes to us which makes the object visible. (iii) Which types of objects do not allow light to pass through them? Correct Answer: Lateral inversion. Question 31. Which is an example of a translucent object? Since then, the incidence of the disease has been sporadic. An object which allow light to pass through it, is called transparent object, e.g., clear glass, water, etc. If you stand before a plane mirror, your left hand appears right. It basically describes the scarcity of rain in an area. This creates an area of darkness on the side of the object away from the source of light. An opaque object blocks the light falling on it. Answer: 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. What are the essential conditions for formation of shadows? Answer: Moon does not emit light of its own. Shadow is formed due to the phenomenon of rectilineas propryation of light. (c) translucent there is an opaque object in the way of light. This explains why we cannot see a shadow in the dark. It works on the principle that light travels in a straight line. With the reduction in distance between the observer and the light source, the relative size of the obstructing body increases till the time it forms a full umbra. A mirror is an example of A shadow is formed when. Hence, for reflection, shiny surfaces are required. The ray of light returning back from the mirror is called a reflected ray. The sky appears to be blue in color due to the same property. Answer: The ray of light falling on the surface of the mirror is called an incident ray. From the critical perspective, this study investigated the role of private tutoring in a context of high-stakes testing through Interpretative Question 25. Image gives more information such as colour, structure, etc., about the object. Answer: When a beam of light falls on a rough surface, it is turned back in different directions, it is called scattering of light. This property of light is called rectilinear propagation of light. This is why we should never see the sun with naked eyes. With two point sources, there would be two separate shadows. Define a pinhole camera. Question 7. Images have colour, unlike shadows. Q.9) If you stand before a plane mirror, your left hand appears right. (c) sometimes erect, sometimes inverted Question 4: In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror? Answer: The difference between shadow and reflection is that a shadow is formed by the blocking of light rays by any object. Filo is the worlds only live instant tutoring app where students are connected with expert tutors in less than 60 seconds. If the angle of elevation of the sun is 53, find the length of the shadow. The dark area is called a shadow. (d) lighted match box, Question 3. The working of a pinhole camera is based on the property of _________ propagation of light. All shadows caused by the sun are made of . What is light? The object is required to be opaque for shadow formation to take place. Light does not bend its path of propagation if the size of the obstructing object is not comparable to the wavelength of 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. (d) none of these, Question 31. (c) light bulb It glows due to reflection of sunlight by it. Shadow. (c) Sun What can you say about the ability of such clouds to transmit light? The following three things are required for a shadow to form: a source of light. Sun is the universal source of light. This dark region is called a shadow. . Question 4. Soumen read the activity 5 given in his textbook on how to make a pinhole camera. Its all about contrast. (b) translucent and 1) Ipre early maan uralked on floot and Carried loadle on his leane. The phenomenon of formation of shadows of celestial bodies on one another is called an eclipse. Question 22. Your Mobile number and Email id will not be published. Ans. The size of shadow totally depends on distance between object (ii) Scattering back of the light by shining surface, (iii) Object through which one can see clearly, (iv) Object through which one cannot see at all, (vi) Object through which we cannot see clearly, (vi) Phenomenon of changing left to right, (vii) Phenomenon of changing left to right. Question 14. 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 15. Therefore, when an object stands in the path of light, it obstructs the light rays from propagating. (b) wood Shadow gives information about (d) none of these, Question 12. Contrary to popular belief, the shadow is not entirely dependent on the size and the shape of the object. A translucent object also creates a faint area of darkness. 13. In solar eclipse moon is between a. Question 29. Features of Image Formed Due to Reflection. In case if the incidence angle is smaller, shadow is longer. Is always black, regardless of the colour of the object. Light travels in (d) Table, Question 8. (c) Do you experienced such superstition in your life? Answer: In a pinhole camera, image formed is inverted because the object is between radius of curvature and focus. (d) none of these, Question 5. The pinhole image of the sun is rectangular. Question 13. Reflection b. Rectilinear propagation c. Diversion d. Dispersion The light from outside enters through the small hole and forms an image on the screen that is inverted. The plane mirror shines due to the silver coating. Answer: (b) translucent The human monkeypox virus (MPXV) was first identified in 1959. What is a shadow? Answer: Question 6. Reflection of light. A plane mirror changes the direction of light that falls on it. Answer: (c) both of these Moon is a non-luminous body though it glows. Example: bulb, candle, torch, etc. Question 22. Example: Sun. Answer: A shadow is always __________ while the image shows true colours of the object. A shadow has the following three characteristics: A very interesting phenomenon occurs when an object forms an image by reflection. Example: Sun. Question 25. Image formed by plane mirror is Answer: Mirror is silvered on one side, so it does not allow the light to pass through it. Give four examples of transparent objects. Image formed by a plane mirror is _________. These are the objects through which one cannot see properly. Answer: Question 11. Question 27. while tracing paper is . Closer the source of light, larger will be the size of the shadow. Save my name, email, and website in this browser for the next time I comment. WebA shadow is an exact copy of an object. Question 28. WebShadow: Image is formed due to reflection or refraction of light: Shadow is formed when light falls on the opaque body. Question 2. 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. Which types of objects do not allow light to pass through them? The images formed by a pinhole camera are upside down, i.e., inverted image. Question 18. Objects that give out or emit light of their own are called __________ objects. The ray of light that falls on a plane mirror is called 11 Facts On Wind Energy (Beginners Guide! (c) eclipse Why is the moon not considered as a luminous body? (d) none of these, Question 25. It is time to put your knowledge to the test by answering a few questions. The size of a shadow is relative to the __________ of source of light with respect to the object. This seeming left-right reversal is called lateral inversion. (b) a random way The phenomenon due to which light returns back after striking a highly polished surface is called _________ of light. Some of the differences between an image and a shadow are given in Table. object. More is the shine and smoothness of the surface, more will be the reflection. 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. Write down four man-made sources of light.Answer: Question 14. Why lunar eclipse not occur every month? How shadow changes with variation in daytime? Question 10. On dark nights a little illumination by moon enables us to see things around us. Answer: Name some luminous objects. Light is a form of energy which when falls on the object enables us to see them. shailjarathore Answer: The area of shade formed by the obstruction is called the geometrical shadow. It is called shadow education because it mimics the mainstream curriculum. (d) Soumen got upset easily without looking and inspecting the actual cause, he is bit careless in doing his activity. Undergoes lateral inversion (i.e., left-right reversal). Answer: Question 4. Question 29. Name sources of light that are not hot. We can define shadow as A shadow is a dark region behind an opaque object where light is blocked by the object. Question 13. A rain shadow forms when moist winds head towards a set of mountains and get forced upwards by them. Diffusion of light. What is an eclipse? Question 1. Example: moon. When is a shadow formed? (d) none of these, Question 29. Sometimes, you are able to see the Sun or the Moon behind the clouds. On the other hand, What is mirror? Question 16. On which property of light a pinhole camera does work? Opaque Object: An object which does not allow passage to light is called an opaque object. The darkness that an object cause when it prevents light to pass through is called _________, Question 6. Sun and Earth b. Question 13. (c) Yes, many a times by my grandmother. (c) both (a) and (b) The following three things are required for a shadow to form (Fig. A shadow is formed only when light rays are blocked by an opaque object. Far the source of light is, smaller is the shadow. Question 5. (a) Electric bulb He was very upset. Objects that do not give out or emit light of their own are called Question 19. The shadow of a coloured object is also coloured. (d) none of these, Question 9. (iii) For the formation of shadow there must be Give four examples of translucent object. (a) Firefly (Jugnu)(b) Tube light(c) The sun(d) Electric bulb. Method: Go out during the day and study your shadow. Classify the following into transparent, opaque and translucent objects:Wax, spectacles, a heap of salt, a stone, dense smoke, wood, skin, balloon, rubber, membrane of a tabla, blood and milk. Question 23. Required fields are marked *. Three basic things are required in shadow formation: We have already learned that the light travels in straight lines. Question 9. A pinhole camera is a device which forms a photographic image of a bright object on a screen. The penumbra is a portion of the shadow of an object where only a certain part of the beam of light gets obstructed by the occluding body. aberrations. The effective embedded material volume on the bending side of the rivet determines the strength of the (d) Parthiv is an intelligent and mature boy with scientific aptitude. (b) translucent object 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. 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