SATHEE: Optics Question 989

Optics Question 989

A normally incident ray is reflected at an angle of $ 90^{o} $ . The value of critical angle is

[RPMT 1996]

Options:

A) $ 45^{o} $

B) $ 90^{o} $

C) $ 65^{o} $

D) $ {{43.2}^{o}} $

Show Answer

Answer:

Correct Answer: B

Solution:

Critical angle C is equal to the incident angle when the ray is reflected normally

$ \therefore C=90^{o} $

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Optics Question 989

A normally incident ray is reflected at an angle of $ 90^{o} $ . The value of critical angle is

Options:

Answer:

Solution:

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