When a ray of light of frequency `6 xx 10^(14)` Hz travels from water of refractive index `4 // 3` to glass of refractive index `8 // 5`, its

Options

A. Frequency becomes five-sixth (`5 // 6`) of its initial value
B. Speed becomes five-sixth (`5 // 6`) of its initial value
C. Wavelength becomes six-fifth (`6 // 5`) of its initial value
D. Speed becomes six-fifth (`6 // 5`) of its initial value

Answer

B