Question

For a colour of light the wavelength for air is 6000 A and in water the wavelength is 4500 A . Then the speed of light in water will be
A) 5.0 * 1014 m/s
B) 2.25 * 108 m/s
C) 4.0 * 108 m/s
D) zero

Answer 1

hey the ans:- b)
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