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A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence `45^(@)`. The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible value (s) of n from the following

A

1.2

B

`4//3`

C

1.4

D

1.5

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) We have, sini`gtsintheta_(c)`
`therefore` `sin45^(@)gt1/nor1/sqrt2gt1/n`
`ngtsqrt2orngt1.414`
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DC PANDEY ENGLISH-RAY OPTICS-Checkpoint 9.3
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  4. A ray of light strikes a glass plate at an angle of 60^(@). If the ref...

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  5. The refractive index of glass with respect to air is 3/2 and the refra...

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  6. How does refractive (µ) of a material vary with respect to wavelength ...

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  7. ""(i)u(j) represents refractive index when a light ray goes from mediu...

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  8. µ(1) and µ(2) are the refractive index of two mediums and v(1) and v(2...

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  9. When light is refracted into a medium

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  10. A spot is placed on the bottom of a slab made of transperent material ...

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  11. An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed fro...

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  12. An under water swimmer is at a depth of 12 m below the surface of wate...

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  13. A vessel of depth 2d cm is half filled with a liquid of refractive ind...

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  14. Three immiscibles transparent liquids with erefractive indices 3/2,4/3...

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  15. A glass-slab is immersed in water. What will be the crirtical angle fo...

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  16. The wavelength of light in two liquids ‘ x ' and ‘ y ' is 3500 Å and ...

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  17. White light is incident on the interface of glass and air as shown in ...

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  18. Calculate the speed of light in a medium whose critical angle is 30^@.

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  19. A ray of light travelling in a transparent medium falls on a surface s...

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  20. A glass slab has a critical angle of 30^(@) when placed in air. What w...

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