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The angle of minimum deviation for a 75^...

The angle of minimum deviation for a `75^(@)` prism of dense glass is found to be `45^(@)` when in air and `15^(@)` when immersed in certain liquid. The refractive index of the liquid is

A

`(sqrt3)/(2)`

B

`3/2`

C

`sqrt(3/2)`

D

`sqrt3`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-GEOMETRICAL OPTICS-LECTURE SHEET (EXERCISE-II (LEVEL-II (ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS))
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  2. A ray of light travels in the way as shown in the figure. After passin...

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

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  4. A certain prism of refracting angle 60^(@) and of refractive index 2 i...

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  5. A ray of monochromatic light is incident on one refracting face of a p...

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  6. The light ray is incidence at angle of 60^(@) on a prism of angle 45^(...

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  7. A prism of glass (mu=1.5) is dipped in to water as shown in the figure...

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  8. ACB is right-angled prism with other angles as 60^(@) and 30^(@) . Re...

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  9. Two prisms A and B are in contact with each other have angular dispers...

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  10. Two prisms A and B have dispersive powers of 0.012 and 0.018 respectiv...

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  11. A convergent beam is incident on two slabs placed in contact as shown ...

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  12. A parallel sided block of glass of refractive index 1.5 which is 36 mm...

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  13. An insect starts moving up in a liquid from point O of variable refrac...

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  14. A point source S is placed at the bottom of different layers as shown ...

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  15. A person looking through a telescope focuses lens at a point on the ed...

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  16. x-y plane separates two media, zge0 contains a medium of refractive i...

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  17. A ray of light travelling in air is inciden at angle of inciden 30^@ ...

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  18. The graph between sine of angle of refraction (sin r) in medium 2 and ...

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  19. A cubic container is filled with a liquid whose refractive index incre...

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  20. Four similar prisms of angle of prism are arranged. Which of the follo...

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