Light enters from air to diamond which has refractive index of 2.42. Calculate the speed of light in diamond . The speed of light in air is `3.0 xx 10^8 ` `m s^-1`

Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m/s .

The refractive index of water is 4/3 . Find the speed of light in water.

What is the speed of light in glass of refractive index 1.5 if the velocity of light in the free space is 3 x 10^8 ms^-1 ?

The speed of light in air is 3×10^8 ms^−1. Calculate the speed of light in glass. The refractive index of glass is 1.5.

A ray of light incident on an equilateral glass prism shows minimum deviation of 30 degree. Calculate the speed of light through the prism.

A man’stationed between two hills fires a gun. He hears the first echo after 1 s and the second after 2 s. What is the distance between the hills. The speed of sound in air is 330 m/s.

A tuning fork oscillates 350 times in second. What is the distance travelled by the sound wave emitted by the tuning fork after its 5 oscillation. The speed of sound in air is 350 m/s

Light from a point source in air falls on a convex spherical glass surface ( refractive index = 1.5, radius of curvature = 20 cm). The distance of light source from the glass surface is 100 cm. At what position is the image formed ?

A frequency of the horn of a car drops from 280 Hz to 240 hz as the car passes a stationary observer.What is the speed of the car?[velocity of the sound in the air is 330 m(s)^-1].