Q. A plane electromagnetic wave is incident on a material surface. If the wave delivers momentum $p$ and energy $E$, then
A) $p = 0,\ E = 0$
B) $p \neq 0,\ E \neq 0$
C) $p \neq 0,\ E = 0$
D) $p = 0,E \neq 0$
Explanation
(b) EM waves carry momentum and hence can exert pressure on surfaces. They also transfer energy to the surface so $p \neq 0$ and $E \neq 0$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.