Ncert- class6- science- Chapter 8: Light, Shadows and Reflections 2 Welcome to your Ncert- class6- science- Chapter 8: Light, Shadows and Reflections 2 1. Match the following: ItemTransparency(a) Iron door(i) Transparent(b) Glass window pane(ii) Translucent(c) Butter paper(iii) Opaque (a) - (ii), (b) - (i), (b) - (iii) (a) - (i), (b) - (ii), (c) - (iii) (a) - (iii), (b) - (ii), (c) - (i) (a) - (iii), (b) - (i), (c) - (ii) None 2. Which of the following statements is true? Light does not change its direction on reflection. As we move the object away from the light source, the shadow of the object becomes smaller. The image formed by a pinhole camera is inverted because light travels in a straight line Reflection is possible only from polished surface. None 3. An example for a non-luminous object is ___________. a 100 W electric bulb the sun a well polished gas burner a candle None 4. The term reflection refers to the bending of light rays: when they enter a different medium around a sharp edge around the boundary of a narrow aperture when they strike a mirror None 5. ________ materials do not allow any light to pass through. Opaque Transparent Translucent Semi absorbent None 6. Which of the following is NOT true about an image formed by a plane mirror? The image depicts only the shape of the object. The image is of the same size as the object. The image is of the same colour as the object. The image is formed on the other side of the mirror None 7. Select the odd one out (shadows, eclipses, expansion, images) eclipses images expansion shadows None 8. The phenomenon by which the incident light falling on a surface is sent back into the same medium is known as ___________. Dispersion None Reflection Refraction None 9. What is the role of aperture in pinhole camera ? Sharpens the image None of these Allows light to enter to form the image Diffracts light passing through it None 10. What kind of lens is used in making a pinhole camera ? Concavo-convex lens Concave lens Convex lens No lens is used None 11. The bouncing of a beam of light from a polished surface in some other direction is called - refraction dispersion scattering reflection None 12. Which of the following is an example of natural pinhole camera ? Thorns on a stem Holes in a leaf Pollen grains in flower All the above None 13. Pinhole camera is a simple application of : scattering of light refraction of light rectilinear propagation of light reflection of light None 14. Sometimes when we pass under a tree covered with a large number of leaves during the daytime, we notice small patches of sunlight under it. Which of the following devices works on the same principle as is observed in the above given scenario? A mirror A pinhole camera A luminous object A glass window None 15. Which of the following objects is not translucent in nature? Butter paper Plastic ruler Glass pane Frosted glass None 16. Shadow moves with The change in the distance between the object and the source of light All of the above The change in position of the source of light The change in position of the object None 17. Using a light lamp, short and clear shadow of a hand can be obtained by placing the hand nearer to the light lamp as far from the lamp as is possible None of these on the light lamp so as not to allow the light to pass None 18. Translucent materials allow ______ amount of light to pass through. some no very less entire None 19. Which of the following is not a characteristic of pinhole camera ? The image produced is black and white It produces an inverted image It is inexpensive to make It works on the principle of rectilinear motion of light None 20. On which of the following factors does the shape and size of a shadow depend? Shape and size of the source of light Direction and shape of the source of light Size and position of the source of light Shape and distance of the source of light None 21. When light is reflected from the a spherical or curved surface: the laws of reflections are not followed the laws of reflections are followed None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
