The mean intensity of radiation on the surface of the Sun is about `10^(s)W//m^2`. The rms value of the corresponding magnetic field is closed to :

Average intensity of the solar energy incident on the earth's surface is 1300 W.m^(-2) . Calculate the rms values of electric and magnetic fields due to this radiation near the earth's surface. (Given mu_0=4pixx10^(-7)H.m^(-1) )

The intensity of solar radiation just outside the earth's atmosphere is measured to be 1.4 kW//m^2 . If the radius of the sun 7xx10^8m , while the earth-sun distance is 150xx10^6km , then find i. the intensity of salr radiation at the surface of the sun. ii. the temperature at the surface of the sun assuming it to be a black body, iii. the most probable wavelength in solar radiation.

The intensity of salr radiation just outside the earth's atmosphere is measured to be 1.4 kW//m^2 . If the radius of the sun 7xx10^8m , while the earth-sun distance is 150xx10^6km , then find i. the intensity of salr radiation at the surface of the sun. ii. the temperature at the surface of the sun assuming it to be a black body, iii. the most probable wavelength in solar radiation.

In an electromagnetic wave in free space the rms value of the electric field is 3V m^(-1) . The peak value of the magnetic field is

The earth’s magnetic field lines resemble that of a dipole at the centre of the earth. If the magnetic moment of this dipole is close to 8 x× 10^(22) Am^(2) , the value of earth’s magnetic field near the equator is close to (radius of the earth = 6.4 × 10^(6) m)

The r.m.s. value of I = I_(1) sin omega t + I_(2) cos omega t is

The r.m.s. value of I = I_(1) sin omega t + I_(2) cos omega t is

In an electromagnetic wave in free space the root mean square value of the electric field is E_(rms)=6 V//m . The peak value of the magnetic field is