A ray of light travelling in air haves wavelength `lambda`, frequency n, velocity v and intensity I. If this ray enters into water then these parameter are `lambda`', n' , v' and I' respectively. Which relation is correct

A ray of light travelling in air have wavelength lambda ,frequency v,velocity u and intensity I.If this ray enters into water,then these parameters are lambda',v',u' and I' respectively.which of the following relation is correct?

wavelength, frequency, velocity and intensity of light when travelling in air is lambda, nu, v and I respectively, When the light ray enters water the value of the above mentioned properties become lambda_(1),nu_(1),v and I_(1) respectively. Which relation is correct?

Give relation among the speed of sound v, wavelength lambda and frequency v.

A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or way from the normal ? Why ?

A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?