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UPSC CAPF AC Paper - I
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When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow-like colours are seen. This can be explained on the basis of the phenomenon of _____.

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Important Questions on Physics

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 69
According to the modern theory for nature of light, the light has _____.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 71
The focal length of the lens of a normal human eye is about _____.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 72
Match the following lists:
     List I                   List II
A. Reflection       1. μ = sin i/sin r
B. Refraction       2. Used for reducing glare
C. Interference    3. Light added to light produces darkness
D. Polarisation    4. Change in path of light without change in medium
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 73

Rainbow is formed due to combination of:

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 74
The human eye has a lens which has a:
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 75
While looking at an image formed by a convex lens (one-half of the lens is covered with a black paper), which one of the following will happen to the image?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 76
When a ray of light is refracted by a prism such that the angle of deviation is minimum, then _____.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 5>Q 77
The spread of colours in a rainbow on sky is primarily due to: