Solution to task 580 from Chertov´s for extramural stud

Solution to task 580 from Chertov´s for extramural stud

580. A point source of monochromatic (λ = 1 nm) radiation is located in the center of a spherical blackened flask with radius R = 10 cm. Determine the light pressure p produced on the inner surface of the flask if the source power is P = 1 kW.