JEE Main 2019 — Physics solution

JEE Main2019Physics

A plane electromagnetic wave having a frequency $ν$ = 23.9 GHz propagates along the positive z-direction in free space. The peak value of the electric field is 60 V/m. Which among the following is the acceptable magnetic field component in the electromagnetic wave?

A
$B$ $= 60 sin (0 .5 \times 1 0^{3} x + 1.5 \times 1 0^{11} t)$ $\hat{i}$
B
$B = 2 \times 1 0^{7} sin (0 .5 \times 1 0^{3} z + 1.5 \times 1 0^{11} t) \hat{i}$
C
$B = 2 \times 1 0^{- 7} sin (0 .5 \times 1 0^{3} z - 1.5 \times 1 0^{11} t) \hat{i}$
D
$B = 2 \times 1 0^{- 7} sin (0 .5 \times 1 0^{2} x + 0. 5 \times 1 0^{11} t) \hat{j}$

Solution

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