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Question

The refractive index of glass is 32. Velocity of light in glass would be


A
3×108 ms1
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B
2×108 ms1
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C
108 ms1
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D
1.33×108 ms1
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Solution

The correct option is B 2×108 ms1
From n=cv,v=cn=3×108(32)=2×108m/s
where n is the refractive index, c is the velocity of light, v is the velocity of light in glass

Physics

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