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Light of a certain colour has 3000 waves...

Light of a certain colour has 3000 waves to the millimetre in air. What is its frequency in water?
`[n_(" water ")=(4)/(3), C = 3 xx 10^(8) m//s]`

A

`9xx10^(11) Hz`

B

`6.75xx10^(14) Hz`

C

`9xx10^(14)Hz`

D

`12xx10^(14) Hz`

Text Solution

Verified by Experts

The correct Answer is:
C
`v_("water")=v_("air")=(C)/(lamda)=cv^(-)`
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