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A prism of glass (mu=1.5) is dipped in t...

A prism of glass `(mu=1.5)` is dipped in to water as shown in the figure. If the refractive index of water is 4/3, then the incident ray will be totally reflected if

A

`sin theta gt 8/9`

B

`sin theta lt 8/9`

C

`sin theta=9/8`

D

`sin theta =8/9`

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The correct Answer is:
A
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AAKASH SERIES-GEOMETRICAL OPTICS-LECTURE SHEET (EXERCISE II LEVEL -II (ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS)
  1. A ray of monochromatic light is incident on one refracting face of a p...

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

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

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

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  5. An isosceles prism has one of the refracting surfaces silvered. A ray ...

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

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

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  8. In the figure shown sin i/sin r is equal to

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

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

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  11. The apparent depth of an object O from AB is

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

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

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

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  15. A body weighs w Newton on the surface of the earth. Its weight at a he...

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

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

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

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

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  20. A ray of light strikes a plane mirror at an angle of incidence 45^@ as...

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