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A thin prism of angle 6^(@) made up of g...

A thin prism of angle `6^(@)` made up of glass of refractive index 1.5 is combined with anorher prism made up of glass of refractive index 1.75 to produce dispersion without deviation. The angle of second prism is

A

`7^(@)`

B

`4^(@)`

C

`9^(@)`

D

`5^(@)`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE-RAY OPTICS AND OPTICAL INSTRUMENTS-Assignment (Section - A) Objective Type Questions (One option is correct)
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  2. For a plano convex lens, the radius of curvature of convex surface is ...

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  3. A convex glass lens (mu(g) = 1.5) has a focal length of 8 cm when plac...

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  4. A light ray is incident normally on one of the refracting faces of a p...

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  5. If a light ray incidents normally on one of the faces of the prism of ...

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  6. A ray of light is incident on one of the faces of the angle prism with...

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  7. A prism of refractive index sqrt(2) has a refracting angle of 60^(@). ...

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  8. The least angle of deviation for a glass prism is equal to its refract...

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  9. A light ray of angles of incidence 40^(@) emerged from the prism in mi...

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  10. The angle of minimum deviation for a 75^(@) prism of dense glass is fo...

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  11. Suppose a small angled prism of 6^(@) deviates a ray through 3^(@), th...

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  12. A crown glass prism of angle of 5^@ is to be combined with a flint gla...

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  13. A thin prism of angle 6^(@) made up of glass of refractive index 1.5 i...

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  14. Compare the dispersive powers of two prisms if one of them deviates th...

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  15. A convex mirror forms an image one-fourth the size of the object. If o...

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  16. A microscope is focussed on the scratch at the bottom of a beaker. Wat...

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  17. While a moving picture is being screened, a boy introduced a glass sla...

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  18. A travelling microscope is focussed on to a scratch on the bottom of a...

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  19. In optical fibre, refractive index of inner part is 1.68 and refractiv...

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  20. A fish looking up through the water sees the outside world contained i...

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