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Light travels in two media A and B with ...

Light travels in two media A and B with speeds `1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1)` respectively. Then the critical angle between them is

A

`sin^(-1) ((1)/(5))`

B

`sin^(-1) ((4)/(5))`

C

`sin^(-1) ((1)/(2))`

D

`sin^(-1) ((2)/(3))`

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. In a medium of refractive index 1.6 and having a convex surface has a ...

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  3. Light travels in two media A and B with speeds 1.8 × 10^(8) m s^(–1) a...

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  4. Light takes t(1) second to travel a distance x cm in vacuum and the sa...

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  5. In the figure shown , for an angle of incidence 45^(@), at the top sur...

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  6. A fish is a little away below the surface of a lake. If the critical a...

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  7. A parallel beam of monochromatic light falls on a combination of a con...

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  8. The magnifications produced by a convex lens for two different positio...

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  9. Three lenses in contact have a combined focal length of 12 cm. When th...

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  10. A lens made of material of Refractive index mu(2) is surrounded by a m...

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  11. The radii of curvatures of a convex lens are 0.04 m and 0.04m. Its ref...

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  12. For a plano convex lens, the radius of curvature of convex surface is ...

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

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

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

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

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

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

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

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

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