The velocities of light in air and glass are 3.0 x 10$^8$ms$^{-1}$ and 2.0 x 10$^8$ms$^{-1}$ respectively. If the angle of refraction is 30º, the sine of the angle of incidence is? 

Similar Questions

The intensity of light falling on the film in a camera depend on the i. brightness of the object....

What is the decay constant of a radioactive element whose half-life is 3 seconds ...

The energy associated with the photon of a radio transmission at 3 x 105 Hz is [h = 6.63 x 10-34Js]...

A body of mass 2kg is released from rest on a plane inclined at an angle of 60° to the hori...

Which of the following is a unit of the time rate of flow of electric charges? ...

A current of 2A passes through a wire of resistance 4Ω for 3 minutes. Calculate the energ...

An electron moves from an energy level of -8.6 eV to another level of -3.5 eV. Determine the frequen...

The thermometric substance of an absolute thermometer is ...

A pipe of length 45cm is closed at the end. Calculate the fundamental frequency of the sound wave ge...

What happens to a water pool on a day when the humidity of the air is very low? ...