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Light rays from a source are incident on...

Light rays from a source are incident on a glass prism of index of refraction `mu` and angle of prism `alpha` At near normal incidence, the angle of deviation of the emerging rays is

A

`(mu-2)alpha`

B

`(mu-1)alpha`

C

`(mu+1)alpha`

D

`(mu+2)alpha`

Text Solution

Verified by Experts

The correct Answer is:
b
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Knowledge Check

  • Light rays from a source are incident on a glass prism of index of refraction u and angle of prism alpha . At near normal incidence, the angle of deviation of the emerging rays is

    A
    `(mu-2)alpha`
    B
    `(mu+2)alpha`
    C
    `(mu+1)alpha`
    D
    `(mu-1)alpha`

  • A ray of light falls on the surface of a spherical glass paper weight making an angle alpha with the normal and is refracted in the medium at an angle beta . The angle of deviation of the emergent ray from the direction of the incident ray is :

    A
    `(alpha - beta)`
    B
    `2(alpha - beta)`
    C
    `(alpha - beta)//2`
    D
    `(beta - alpha)`

  • Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is mu , a ray, incident at an angle theta , on the face AB would get transmitted through the face AC of the prism provided:

    A
    `thetagtcos^(-1)[musin(A+sin^(-1)((1)/(mu))]`
    B
    `thetaltcos^-1[musin(A+sin^-1((1)/(mu))]`
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    D
    `thetaltsin^-1[musin(A-sin^-1((1)/(mu))]`

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