Question

A light of wave length 6000 A0 in air enters a medium with refractive index 1.5. what will be the frequency and wave length of light in medium?

Answer 1

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Answer 2

Explanation: Here wave length of light in air l = 6000A^0 = 6X10^-7m

Refractive index of medium = 1.5 = n

The frequency of light does not change, when light travels from air to a refracting medium.

n=c/l = 3X108/6X10-7 = 5X1014Hz

The wave length of light in the medium l1=l/n = 6000/1.5 = 4000A0