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