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Light of a certain wavelength has a wave...

Light of a certain wavelength has a wave number `barv` in vacum. Its wave number in a medium of refractive index n is

A

`n/v`

B

`(1)/(n barv)`

C

`(barv)/(n)`

D

`n barv`

Text Solution

Verified by Experts

The correct Answer is:
D
`n barv`
`bar(lamda_(a))=barv,barlamda_(m)= ?, mu =n`
`m =(lamda_(a))/(lamda_(m))=(bar(lamda_(m)))/(lamda_(m))=(bar(lamda_(m)))/(barv)`
`bar(lamda_(m)) =m barv`
`= n barv. `
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