Radiation pressure on sphere vs disk · CAP 2013 #14
Physics · optics
Problem
Two black objects of the same diameter, a sphere and a flat disk, are placed in a parallel beam of light. The plane of the disk is perpendicular to the beam. What can be said about the force acting on them?
a) The force is zero.
b) The force is larger on the disk than on the sphere.
c) The force is larger on the sphere than on the disk.
d) The force is the same on both objects.