Calculate the speed of light in a medium whose critical angle is `180^@`.

State the condition of total internal reflection. Calculate the speed of light in the medium whose critical angle of 45^@ .

What is the speed of light in a dense medium of polarising angle 30^@ ?

Light travels from air to water of refractive index 1.33. calculate the speed of light in water, if speed of light in air is 3.0xx10^8 m/s

Explain how Corpuscular theory predicts the speed of light in a medium, say, water, to be greater than the speed of light in vacuum. Is the prediction confirmed by experimental determination of the speed of light in water ? If not, which alternative picture of light is consistent with experiment?

What do you mean by critical angle?

Calculate the frequency of a light wave whose time period is 3 (10*-10 sec )

Calculate the wavelength and frequency of a light wave whose period is 2* 10(-10)