A perfectly absobing, black, solid sphere with constant density and radius R, hovers stationary
Channel: Doubtnut
Date: 2020-04-12

A perfectly absobing, black, solid sphere with constant density and radius R, hovers stationary above the sun. This is because the gravitational attraction  of the sun is balanced  by the pressure due to the sun's light. Assume the sun is far enough away that it closely approximates  a point source of light. The distance from the centre of the sun at which the sphere hovers is :