1.

Refractive index of air is 1.0003. The correct thickness of air column which will have one more wavelength of yellow light \[\left( 6000\text{ }{AA} \right)\] than in the same thickness in vacuum is  [RPMT 1995]

A. 2 mm                                       
B. 2 cm
C. 2 m                                           
D. 2 km
Answer» B. 2 cm


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