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TIR in Prism

Which of the ...

Question

Which of the two prisms, $A$ made of crown glass and $B$ made of flint glass, deviates a ray of light more ?

A

A

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B

B

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C

Both deviate same

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D

cant say

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Solution

The correct option is B B
Refractive index of flint glass is 1.62 which is more than that of crown glass which is 1.52. Thus, flint glass will bend the ray more as compared to crown glass and hence, a greater angle of deviation.

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