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A glass slab of thickness 4 cm contains ...

A glass slab of thickness `4 cm` contains the same number of waves as `5 cm` of water, when both are traversed by the same monochromatic light. If the refractive index of water is `4//3,` then refractive index of glass is

A

`(5)/(3)`

B

`(5)/(4)`

C

`(16)/(15)`

D

`(3)/(2)`

Text Solution

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The correct Answer is:
A
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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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  3. A glass slab of thickness 4 cm contains the same number of waves as 5 ...

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  6. A small object is placed 20 cm in front of a block of glass 10 cm thic...

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

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

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

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

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

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

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

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