30 A point isotropic light source of power P 12 watts is

Last updated: 6/12/2023

30 A point isotropic light source of power P 12 watts is located on the axis of a circular mirror of radius R 3 cm If distance of source from the centre of mirror is a 39 cm and reflection coefficient of mirror is a 0 70 then the force exerted by light ray on the mirror is 10 0 N