If the speed of light is `3.0 xx10^(8) ms^(-1)`. calculate distance convered by the light in 2.00 ns.

The refractive index of glass is 1.5 and that of water is 1.3.If the speed of light in water is 2.25 xx 10^8 m s^(-1) ,what is the speed of light in glass?

The frequency of strong yellow light in the spectrum of sodium is 5. 09 xx 10 ^(14) s ^(-1). Calculate the wavelengh of the light.

In a two-slit experiment with monochromatic light, fringes are obtained on the screen placed at some distance form the slits. If the screen is moved by 5 xx 10^-2 m towards the slits, the change in fringe width is 3 xx 10^-5 m . If the distance between the slits is 10^-3 m , calculate the wavelength of the light band.

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 20 s to cover this distance ?

A planet is revolving round the sun in elliptical orbit. The maximum and minimum distances of the planet from the sun are 2 xx 10^2 m and 2 xx 10^10 m respectively. The speed of the planet when it is nearest to sun is 2 xx 10^15 ms^-1 What is the speed when it is farthest to the sun?

A hot metal emits photon of light with energy 3.0 (10*-19) J. Calculate the frequency and wavelength of the photon ?

The electron moves around the ucelus in a hydrogen atom of radis 0.51overset(@)A , with a speed of 2xx10^5ms^-1 . Calculate the following: The equivalent current due to orbit motion of electron.

Electromagnetic spectrum Electromagnetic waves are coupled time varying electric and magnetic fields, propagating in space, with the speed very close to that of light (3xx10^8 ms^-1) . An the orderly distribution and classification of electromagnetic waves according to their frequency or wavelength is called electromagnetic spectrum. electromagnetic waves inclued visible light, ultraviolet waves, infra red waves, X-rays, gamma-rays, microwaves and radiowaves. The wavelength range of visible light is