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A place electromagnetic wave is propagat...

A place electromagnetic wave is propagating along the direction `(hati + hatj)`, then which of the following is the direction of the magnetic field component.

A

`(-hati + hatj)`

B

`(hati - hatj)`

C

`(-hati - hatj)`

D

`(hati + hatj)`

Text Solution

Verified by Experts

The correct Answer is:
A
The magnetic field component is perpendicular to the direction of propagation and the direction of electric field. Using vector algebra `E xx B` should be in `z`-direction.
`:. (hati + hatj) xx (-hati + hatj) = 2hatk`
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