What is the wave length of a television station,which transmits vision in 500 MHz?
Given `c=3 xx 10^8 m s^(-1)`.

What is wavelength of a T.V. station, which transmits vision on 600 MHz?

Green light of mercury has a wavelength 5*5 xx 10^(-5) cm. What is the wavelength in glass,if refractive index of glasss is 1.5?Given, c=3 xx 10^8 m s^(-1) .

In an electromagnetic wave,the amplitude of oscillating magnetic field is 2 xx 10^(-7) T. What is the amplitude of oscillating electric field in the wave?Given c=3 xx 10^8 m s^(-1) .

During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station ? The signal travels at a speed of light that is 3 xx 10^8 ms^-1 .

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.0 xx 10^10 Hz and amplitude 48 V m^-1 . Show that the average energy density of the E field equals the average energy density of the B field, [c = 3 xx 10^8 m s^-1 .]

A current of 1 A flows through a wire of length 0.24m and area of cross-section 1.2mm^2 , when it is conneted to a battery of 3V. Find the number density of free electrons in the wire, if the electron mobility is 4.8 xx 10^-6 m^2 V^-1s^-1 , given that charge on electron = 1.6 xx 10^-19C