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A ray of light is incident at an angle o...

A ray of light is incident at an angle of `75^(@)` into a medium having refractive index `mu`. The reflected and the refracted rays are found to suffer equal deviations in opposite direction. Then `mu` equals to

A

`(sqrt3 + 1)/(sqrt3 - 1)`

B

`(sqrt3 + 1)/(2)`

C

`(2sqrt2)/(sqrt3 + 1)`

D

none of these

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-GEOMETRICAL OPTICS-ADDITIONAL PRACTICE EXERCISE (LEVEL-II LECTURE SHEET(ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  3. A ray of light is incident at an angle of 75^(@) into a medium having ...

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  5. A small object of height 0.5 cm is placed in front of a convex surface...

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  6. A ball is kept at a height h above the surface of a heavy transparent ...

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  7. A ring of radius 1cm is placed 1m in front of a spherical glass ball...

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  8. The radii of curvature of two spherical surfaces of a concave convex l...

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  9. A light ray travelling parallel to the principal axis of a convex lens...

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  10. Twot thin lenses when placed in contact, then the power of combination...

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  11. A convex lens is placed some where between an object and a screen whic...

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  13. A thin plano-convex lens of focal length f is split into two halves. O...

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  14. A converging lens L(1) of focal length 20 cm is separated by 8 cm from...

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  15. A point object is placed at a distance of 20 cm from a thin plano-conc...

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  16. Figure shows an arrangement ofan equiconvex lens (f=20 cm in air) and ...

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  17. A point object O is placed at a distance of 0.3m from a convex lens (f...

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  18. A small object stuck on the surface of a glass sphere (n=1.5) is viewe...

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  19. A plano-convex lens has thickness 4cm. When places on a horizontal tab...

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