Monochromatic light of frequency 5 x 10⁴ Hz travelling in vacuum enters a medium of refractive index 1.5. Its wavelength in the medium is :
Monochromatic light of frequency 5 x 10⁴ Hz travelling in vacuum enters

Q. Monochromatic light of frequency 5 x 10⁴ Hz travelling in vacuum enters a medium of refractive index 1.5. Its wavelength in the medium is

A.            5000 A0

B.            4000 A0

C.            5500 A0

D.            6000 A0

Answer: 4000 A0
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