Which one of the following is the property of a monochromatic, plane electromagnetic wave in free space?`(a)`Electric and magnetic fields have a phase difference of `(π/ 2)` `(b)`The energy contribution of both electric and magnetic fields are equal `(c)`The direction of propagation is in the direction of electric field E `(d)`The pressure exerted by the wave is the product of energy density and the speed of the wave

Options

A. Electric and magnetic fields have a phase difference of `(pi)/(2)`
B. The energy contribution of both electric and magnetic fields are equal
C. The direction of propagation is in the direction of electric field E
D. The pressure exerted by the wave is the product of energy density and the speed of the wave

Answer

B

Explanation

The energy contribution of both electric and magnetic fields are equal property of a monochromatic, plane electromagnetic wave in free space.