If the velocity and wavelength of light in air is Va and λa and that in water is Vw and λ , then the refractive index of water is,
A. Vw/Va
B. Va/Vw
C. λw/λa
D. Vaλa / Vwλw
Answer:B
If the velocity and wavelength of light in air is Va and λa and that in water is Vw and λ , then the refractive index of water is,
A. Vw/Va B. Va/Vw C. λw/λa D. Vaλa / Vwλw