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