10. The Human Eye & The Colourful World
MCQ"s Test
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1. The phenomenon of light responsible for the working of the human eye is: *
1 point
2. Match the parts of eye given in Column (A) with their appropriate function given in Column (B): *
1 point
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3. When we enter a dark room coming from outside the things inside the room do not appear clear to our eyes immediately is because: *
1 point
4. When light rays enter the eye most of the refraction occurs at the: *
1 point
5. The image distance from the eye lens in the normal eye when we increase the distance of an object from the eye: *
1 point
6. A person cannot see objects distinctly kept beyond 2 m. This defect can be corrected by using which type of lens and of what power? *
1 point
7. Which of the following is considered as a reason for hypermetropia? *
1 point
8. What is the cause of presbyopia? *
1 point
9. Person suffering from cataract has: *
1 point
10. When a ray passes through a prism: *
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11. A transparent refracting material Which Is bounded by two plane refracting surfaces is: *
1 point
12. A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in below figure. In which of the following diagrams. after dispersion, the third colour from the top of the spectrum corresponds to the colour of the sky? *
1 point
13. If a beam of red light and a beam of violet light are incident at the same angle on the inclined surface of a prism from air medium and produce angles of refraction r and v respectively. which of the following is correct? *
1 point
14. In the diagram given below. X and Y are the end colours of the spectrum of white light. The colour of 'Y' represents the: *
1 point
15. Which of the following phenomena of light are involved in the formation of a rainbow? *
1 point
16. The sky appears dark to passengers flying at very high altitudes mainly because: *
1 point
17. Twinkling of stars is due to atmospheric: *
1 point
18. When light enters the atmosphere it strikes on extremely fine particles, which deflect the rays of  light in all possible directions.This is due to: *
1 point
19. Which of the following is not the cause of atmospheric refraction? *
1 point
20. Refraction of light by the Earth's atmosphere due to variation in air density is called: *
1 point
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