Light of wavelength 589 nm in vacuum passes through a piece of fused quartz of index of refraction n = 1.458. What is the frequency of the light in fused quartz?

[Speed of light c = \(3.00×10^8 ms^{-1}\)]

A beam of light travelling in water is incident on a glass which is immersed in the water. The incident beam makes an angle of \(40^o\) with the normal. Calculate the angle of refraction in the glass.

[Refractive index of water = 1.33, Refractive index of glass = 1.5]

Rainbow is formed when sunlight undergoes 

Calculate the depth of a swimming pool if the apparent depth is 10cm. ( Refractive index of water = 1.33 )

A ray of light travels from a less dense medium to a denser medium. How are the speed and frequency of the light affected? The speed