As temperature of medium increases the critical angle

If temperature of a medium increases velocity of sound ____ .

The refractive index of a medium with respect to air the critical angle 60^@ is given by

If the absolute refractive index of a medium is sqrt2 , calculate the critical angle of glass to the medium. Given that the critical angle of glass to air is 30^(@) .

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

Calculate the speed of light in a medium whose critical angle is 45^(@) .

Calculate the speed of light in a medium whose critical angle is 45^@ .

Calculate the speed of light in a medium whose critical angle is 45^(@) .

Calculate the speed of light in a medium whose critical angle is 30^@ .

Calculate the speed of light in a medium whose critical angle is 30^(@) .