When light moves from one medium to another
(i) the frequency of light remains same and wavelength changes
(ii) refractive index of a medium is the ratio of speed of light in vacuum and speed of light in medium
(iii) refractive index of a medium is the ratio of wavelength of light in vacuum and wavelength in medium
(iv) for denser medium, the value of refractive index is larger

Options

A. (i), (ii)
B. (ii), (iii)
C. (ii), (iii), (iv)
D. all options are correct

Answer

D