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A light ray is incident on a prism in mi...

A light ray is incident on a prism in minimum deviation position and suffers a deviation of `40^@`. If the shaded half of the prism is removed off, then the same ray will suffer a deviation of

A

`20^@`

B

`40^@`

C

`80^@`

D

`0^@`

Text Solution

Verified by Experts

The correct Answer is:
A
`delta=(i-r)+(i^'-r^')`
Deviation by two portions is same, if one half is removed, deviation due to remaining portion `=20^@`
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CP SINGH-REFRACTION OF LIGHT BY PLANE SURFACES-Exercises
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  10. The graph between angle of deviation (delta) and angle of incidence (i...

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  12. A medium is said to be dispersive if

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