1. If the intensity of an electromagnetic wave doubles,
(a) The electric field must also double.
(b) The magnetic field must also double.
(c) Both the magnetic field and the electric field must increase by a factor of
(d) Any of the above.
2. If all else is the same, for which surface would the radiation pressure from light be the greatest?
(a) A black surface.
(b) A gray surface.
(c) A yellow surface.
(d) A white surface.
(e) All experience the same radiation pressure, because they are exposed to the same light.