True or false
Speed of light is same in all mediums.

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?

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

With the help of a diagram,explain the Huygens' principle for the propagation of light in a medium.

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

An initially parallel cylindical beam travels in a medium of refractive index mu(I)=mu_0+mu_2I ,where mu_0 and mu_2 are positive constants and I is the intensity of the light beam.The intensity of the light beam is decreasing with increasing radius. The speed of the light in the medium is

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

The coming back of light into the same medium after falling on the shining surface is called .........

State whether True or False. All squares are not parallelograms.