A parallel beam of monochromatic light of wavelength 663 nm is incident on a totally
Channel: Doubtnut
Date: 2020-07-05

A parallel beam of monochromatic light of wavelength 663 nm is incident on a totally reflection plane mirror. The angle of incidence is `60^@` and the number of photons striking the mirror per second is `1.0xx10^19`. Calculate the force exerted by the light beam on the mirror.