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If the refracting angle of a prism is 60...

If the refracting angle of a prism is `60^@` and the minimum deviation is `30^@`, then the angle of incidence is

A

`30^@`

B

`60^@`

C

`45^@`

D

`90^@`

Text Solution

Verified by Experts

The correct Answer is:
C
`i=(A+delta_m)/(2)=(60^@+30^@)/(2)=45^@`
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CP SINGH-REFRACTION OF LIGHT BY PLANE SURFACES-Exercises
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  7. A ray of light is incident normally on one of the faces of a prism of ...

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  8. A ray of light is incident normally on one face of an equilateral pris...

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  9. A prism having refractive index sqrt2 and refractive angle 30^@ has on...

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  10. A ray falls on a prism ABC(AB=BC) and travels as shown in adjoining fi...

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  11. A glass prism of refractive index 1.5 is immersed in water (refractive...

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  12. A prism of angle 60^@ deviates a ray of light through 32^@ for two ang...

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  13. The maximum value of index of refraction of a material of a prism whic...

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  14. Two beams of red and violet colours are made to pass separately throug...

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

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

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

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

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

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

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