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The wavelength of light in air and some ...

The wavelength of light in air and some other medium are respectively `lambda_(a)` and `lambda_(m)`. The refractive index of medium is

A

`lambda_(a)//lambda_(m)`

B

`lambda_(m)//lambda_(a)`

C

`lambda_(a)xxlambda_(m)`

D

None of these

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The correct Answer is:
a
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