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Q.

What is refraction? Give two examples.


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a

bending of light

b

bouncing back of light

c

phenomenon of polarization

d

None of the above 

answer is A.

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Detailed Solution

Concept: Diagonal movement from one medium to another changes the direction of light propagation in the second medium. This phenomenon is known as refraction.
Refraction of light involves changes in the speed of light at the interface between the two light media.
Two common examples of refraction are:
A pencil soaked in water in a glass appears to bend at the interface between water and air. The coin at the bottom of the water-filled container appears to be slightly higher than its actual position due to the refraction of light.
Hence, the correct option is 1.
 
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