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Calculate the speed of light in a medium...

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

A

`1.5xx10^(8)`m/s

B

`3xx10^(8)`m/s

C

`4.5xx10^(8)`m/s

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
(a) We have,sin`theta_(c)=1/µ`
`therefore` `µ=1/(sin30^(@))=2`
The velocity of light, v=`c/µ=(3.0xx10^(8))/(2)`
=`1.5xx10^(8)m//s`
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DC PANDEY ENGLISH-RAY OPTICS-Checkpoint 9.3
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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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  11. An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed fro...

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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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