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Velocity of light in rarer medium is v(1...

Velocity of light in rarer medium is `v_(1)` it passes through denser medium with velocity `v_(2)` incidents at 'i' angle and refracts by 'r angle, then .....

A

`v_(1)=v_(2)`

B

`v_(1) gt v_(2)`

C

`v_(1) lt v_(2)`

D

none of above.

Text Solution

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The correct Answer is:
B
According to Snell.s law,
`(sin i)/(sin r)=(v_(1))/(v_(2))`
Refracted rau ends towards normal.
`r lt i`
`:.(sin i)/(sin r) gt 1`
`:.(v_(1))/(v_(2)) gt 1`
`:.v_(1)gt v_(2)`
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