Q.

What is the absolute refractive index of crown glass?


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a

1.52

b

3.22

c

4.22

d

1.00029 

answer is A.

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Detailed Solution

The absolute refractive index of crown glass is 1.52.
"The absolute Refractive index is the ratio of the speed of light in a vacuum to the speed of light in that medium." Mathematically,
Absolute refractive index of medium= speed of light in air speed of light in medium   
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