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