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Question

The refractive index of a certain glass is 1.5 for light whose wavelength in vacuum is 6000 Å. The wavelength of this light when it passes through glass is

[NCERT 1979; CBSE PMT 1993; MP PET 1985, 89]


A

4000 Å

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B

6000 Å

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C

9000 Å

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D

15000 Å

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