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A ray of light is incident normally on o...

A ray of light is incident normally on one of the faces of a prism of apex angle 30 degree and refractive index sqrt2. The angle of deviation of the ray is…degrees.

A

`0^@`

B

`12.5^@`

C

`15^@`

D

`22.5^@`

Text Solution

Verified by Experts

The correct Answer is:
C

Refraction at AC:
`musin30^@=1xxsini^'`
`sqrt2xx1/2=sini^'impliesi^'=45^@`
Angle of deviation
`delta=i^'-30^@=45^@-30^@=15^@`
OR
`delta=(i+i^')-A=(0+45^@)-30^@=15^@`
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CP SINGH-REFRACTION OF LIGHT BY PLANE SURFACES-Exercises
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  9. The maximum value of index of refraction of a material of a prism whic...

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  11. When a glass prism of refracting angle 60^(@) is immersed in a liquid ...

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  12. Angle of prism is A and its one surface is silvered. Light rays fallin...

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  13. Three prisms 1, 2 and 3 have the prism angle A = 60^(@), but their ref...

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  14. A ray of light is incident at small angle I on the surface of prism of...

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  15. A light ray is incident on a prism in minimum deviation position and s...

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  16. An isosceles prism of angle 120degree has a refractive index 1.44. Two...

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  17. Two parallel light rays are incident at one surface of a prism of refr...

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  18. P is small angled prism of angle 3^(@) made of a material of refractiv...

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  19. Light is incident normally on face AB of a prism as shown in Figure. A...

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  20. A beam of white light is incident on a hollow prism of glass. Then

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