Quiz on Sequel of Refraction of Light 1

Quiz on Sequel of Refraction of Light

1. Which of the following is/are phenomena of refraction? (i) swimming pool looks shallower than it really is (ii) a word seems larger when view through a block of glass (iii) chopstick half immersed in Only (i) and (iii) water seems to bend upward All of the above

2. Which of the following make use of refraction? periscope telescope plane mirror colour filter

3. Convex lens diverges light. converges light. is thinner in the middle. reflects light.

4. Which of the following instruments make use of convex lens? (i) microscope Only (i) and (ii) hand lens (iii) periscope (iv) optical fibres Only (i) and (iii) Only (iii) and (iv)

5. Concave lens diverges light. converges light. is thicker in the middle. reflects light.

6. The lens used in hand lens is concave lens. convex lens. plane mirror. colour filter.

7. When we look at an object in the water at the shore, it appears to be bent. laterally inverted. at a lower position. at a higher position.

8. When we look at a burning candle, the images of the objects behind the candle become distorted. This is due to reflection. refraction. dispersion. total internal reflection.

9. Which of the following make(s) use of total internal reflection? (i) optical fibres (ii) cat’s eye reflector (iii) endoscopy Only (i) and (ii) Only (i) and (iii) All of the above

10. Which of the following is/are the advantage(s) of using optical fibres? (i) Signals can be transmitted in Only (i) optical fibres over a long distance. (ii) Signals in optical fibres are less likely to be interfered. Only (i) and (ii) (iii) A large amount of signals can be transmitted in optical fibres. Only (ii) and (iii) All of the above