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ABC is right angled prism kept in air. A...

ABC is right angled prism kept in air. A ray (1) is incident on the face AB along the normal. Another ray (2) is incident on the face AB such that it emerges normally form the face AC. Then

The minimum value of refractive index of the material of the prism for which the ray 1undergoes TIR on the face AC is

A

`sqrt2`

B

2

C

1.5

D

2.2

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A ray of light is incident at small angle I on the surface of prism of small angle A and emerges normally from the oppsite surface. If the refractive index of the material of the prism is mu, the angle of incidence is nearly equal to

    A
    `A/mu`
    B
    `A/(2mu)`
    C
    `muA`
    D
    `(muA)/(2)`