Ncert- class6- science- Chapter 8: Light, Shadows and Reflections 1 Welcome to your Ncert- class6- science- Chapter 8: Light, Shadows and Reflections 1 1. Shadows are formed due to: Cannot say Blockage of light and heat by the opaque objects Blockage of light by the opaque objects Transfer of light through any opaque object None 2. Which of the following body allows only a part of the light to pass through it? Brick Oiled paper Wood Air None 3. The shadow below a tree has bright spots in it because : the gaps between the leaves act as the pin holes the light bends around the leaves to form circular spots the leaves are circular the light comes through circular gaps None 4. The colour of shadow formed by red light is: Green Black Blue Grey None 5. A thin layer of water is transparent but a very thick layer of water is : opaque completely transparent translucent most transparent None 6. What acts as a pinhole in the naturally formed pinhole images of sun ? The shadow of birds sitting on the trees The trunk of leafless trees The twigs and branches of trees The gaps between the leaves None 7. The shadow below a tree has bright spots in it because: The light bends around the leaves to form circular spots The leaves are circular The light comes through circular gaps The gaps between the leaves act as the pin holes None 8. In a room lighted by an electric bulb, it is found that the shadow of the ceiling fan hung in the centre is falling on a wall opposite to the door. What can you say about the position of the bulb On the wall facing the door On the wall on your left as you enter the room On the wall on your right as you enter the room On the wall having the door None 9. The phenomenon of rebounding and change in direction of light when it strikes the surface of a mirror is called ____________ Diffraction None of these Refraction Reflection None 10. Change in the direction of light when it falls on an object is called : Absorption Adsorption Reflection Refraction None 11. Which of the following reflects the light instead of refracting it? Paper Lens Shiny silver mirrors Glass None 12. Which fact can be established by a pinhole camera? Light travels in straight lines Images are always inverted Image gets inverted when the light travels through a hole No specific conclusion None 13. Nature of the shadow depends on : The relative distance between the source of light and the object The angle between the source of light and the object The relative size of the source of light and the object All of the above None 14. The length of the shadow will be shortest when The source of light and the object are perpendicular to each other The angle between the source of light and the object is 45 The angle between the source of light and the object is 60 The source of light and the object are parallel to each other None 15. Which of the following is the setup to make a basic pinhole camera ? An enclosed box with a small concave mirror on one of its surface An enclosed box with a small plane mirror on one of its surface An enclosed box with a small hole on one of its surface An enclosed box with a small convex mirror on one of its surface None 16. Select the odd one out w.r.t. transparency (air, fog, mist, tissue paper) tissue paper air fog mist None 17. A body which allows almost all the light to pass through it and does not reflect any light is a- opaque body polished surface transparent body translucent body None 18. A body which allows most of the light to pass through it is called a : translucent body opaque body light medium transparent body None 19. Which of the following type of bodies form sharp shadows when placed in the path of light? Translucent Transparent Opaque Transparent and translucent None 20. Which of the following is a translucent? Silver Iron Ground glass Wood 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.
