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