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A thin prism of angle 15^@ made of glass...

A thin prism of angle `15^@` made of glass of refractive index `mu_1=1.5` is combined with another prism of glass of refractive index `mu_2=1.75`. The combination of the prisms produces dispersion without deviation. The angle of the second prism should be

A

`12^@`

B

`5^@`

C

`70^@`

D

`10^@`

Text Solution

Verified by Experts

The correct Answer is:
D
For no deviation
`(mu_1-1)A_1=(mu_2-1)A_2`
`(1.5-1)(15^@)=(1.75-1)A_2impliesA_2=10^@`
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CP SINGH-REFRACTION OF LIGHT BY PLANE SURFACES-Exercises
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  2. Two parallel light rays are incident at one surface of a prism of refr...

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

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

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  6. For a small angled prism, angle of prism A of minimum deviation(delta)...

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  7. The graph between angle of deviation (delta) and angle of incidence (i...

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  8. A narrow beam of white light enters slab having parallel faces.

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  9. A medium is said to be dispersive if

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  10. Dispersion can take place for

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  11. The angular dispersion produced by a prism

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  12. Dispersive power depends upon

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  13. If D is the deviation of a normally falling light beam on a thin prism...

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  14. If a glass prism is dipped in water, its dispersive power

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  15. By properly combining two prisms made of different materials, it is po...

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  16. When white light passes through the achromatic combination of prisms, ...

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  17. A prism can produce a minimum deviation delta in a light beam. If thre...

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  18. A thin prism of angle 15^@ made of glass of refractive index mu1=1.5 i...

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  19. An achromatic prism is made by combining two prisms P1(muv=1.523, mur=...

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  20. A prism of a certain angle deviates the red and blue rays by 8^@ and 1...

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