The speed of light in air is-

Explain how Newton's 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 45^(@) .

Calculate the speed of light in a mediun whose crifical angel is 45^@ . Mention two practical applications of optical fibre.

A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if light takes 8 min and 20s to cover this distance?

A ray of light passing from air through an equilateral glass prism undergoes minimum deviation when the angle of incidence (3)/(4) of the angle of prism .Calculate the speed of light in the prism.

A whistle whose air column is open at both ends has a fundamental of 5100 Hz . If the speed of sound in air is 340m* s^(-1) , the length of the whistle in cm, is

A whistle whose air column is open at both ends has a fundamental frequency of 5100 Hz. If the speed of sound in air is 340 ms^(-1) , the length of the whistle, in cm, is