A parallel beam of monochromatic light of wavelength is incident normally on a…
PHYSICS · Multi-part · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter
Problem
A parallel beam of monochromatic light of wavelength 500nm is incident normally on a perfectly absorbing surface. The power through any cross-section of the beam is 10W. Find:
(a) The number of photons absorbed per second by the surface.
(b) The force exerted by the light beam on the surface.