JEE Main · PhysicsEasy
An electromagnetic wave is propagating in the positive -direction. If the electric field vector is oscillating in the -direction, then the magnetic field vector must oscillate in which direction?
- A.-direction
- B.-direction
- C.-direction
- D.-plane
Show correct answer & step-by-step solution
Correct answer: C — -direction
Solution
- The direction of propagation is given by the vector .
- Given propagation is in the direction and is in the direction.
- We require .
- This implies must be in the or -direction.
- Hence the answer is (C).
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