Chapter 11
Light, Shadows and Reflections
1. Without what is it impossible to see things?
a) The heat
b) of light
c) of the shadows
Answer: b) of light
2. Whose presence makes us see things during the day?
a) of the torch
b) of the bulb
c) The sun
Answer: c) The sun
3. What is an object that gives light or diffuses light?
a) radiant
b) lack luster
c) visible
Answer: a) radiant
4. The What is an object called if nothing can be seen through it?
a) transparent
b) opaque
c) God is transparent
Answer: b) opaque
5. What happens when there is an opaque object in the path of light?
a) shadow
b) reflect
c) The light
Answer: a) shadow
6. In what line does light always move?
a) In the curved line
b) in a straight line
c) It’s not either
Answer: b) in a straight line
7. What can be used to reflect and get a clean image?
a) of the mirror
b) of light
c) of the shadows
Answer: a) of the mirror
8. What is the object in the picture below?
a) Ajopa tree
b) A man
c) A periscope
Answer: c) A periscope
9. What is the English form of the word ‘bright’?
a) Luminous
b) Opaque
c) Transparent
Answer: a) Luminous
10. What object can light pass through?
a) radiant
b) transparent
c) God is transparent
Answer: b) transparent
11.Through what material can light pass partially ?
a) transparent
b) opaque
c) God is transparent
Answer: c) God is transparent
12. What is the English form of the word ‘transparent’?
a) Translucent
b) Transparent
c) Reflection
Answer: b) Transparent
13. Which of the following is an opaque substance?
a) A wall
b) A mirror
c) Polythene
Answer: a) A wall
14. Which of the following is a luminous substance ?
a) A piece of carbon paper
b) A piece of pebble
c) A burning torch
Answer: c) A burning torch
15. What is the scene reflected in the picture below?
a) mirror reflection
b) motion in a straight line of light
c) Both of the above
Answer: c) Both of the above
16. What is the English form of the word ‘reflection’?
a) Reflection
b) Luminous
c) Mirror
Answer: a) Reflection
17. What is needed to create a shadow?
a) A light source
b) An opaque substance
c) Both of the above
Answer:
18. What is the English form of the word ‘mirror’?
a) Mirror
b) Transparent
c) Opaque
Answer: a) Mirror
19. Which of the following is a transparent substance?19. Which of the following is a transparent substance?
a) smoke
b) air
c) Polythene
Answer: b) air
20. What is the English form of the word ‘shadow’?
a) Shadow
b) flection
Answer: a) Shadow