Modern Physics 7 Question 6
6. The electric field of a plane electromagnetic wave is given by
The corresponding magnetic field
(Main 2019, 10 April I)
(a)
(b)
(c)
(d)
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Solution:
- Key Idea For an electromagnetic wave, its electric field vector (E) and magnetic field vector (B) is mutually perpendicular to each other and also to its direction of propagation.
We know that,
Thus, from the above discussion, direction of
From Maxwell’s equation,
Integrating both sides of the above equation w.r.t.
