Optics Question 287
Question: If $ \overrightarrow{E} $ and $ \overrightarrow{B} $ are the electric and magnetic field vectors of E.M. waves then the direction of propagation of E.M. wave is along the direction of
[CBSE PMT 1992, 2002; DCE 2002, 05]
Options:
A) $ \overrightarrow{E} $
B) $ \overrightarrow{B} $
C) $ \overrightarrow{E}\times \overrightarrow{B} $
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
EM waves travels with perpendicular to E and B. Which are also perpendicular to each other $ \vec{v}=\vec{E}\times \vec{B} $
