A plane electromagnetic wave propagating in x-direction is described by

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Solution

Q.
A plane electromagnetic wave propagating in x-direction is described by

$E_{y} = (200 V m^{- 1}) \sin [1.5 \times 10^{7} t - 0.05 x];$

The intensity of the wave is

(Use $ε_{0} = 8.85 \times 10^{- 12} C^{2} N^{- 1} m^{- 2}$ ) [2024]

1 $35.4$ $W m^{- 2}$

2 $53.1$ $W m^{- 2}$

3 $26.2$ $W m^{- 2}$

4 $106.2$ $W m^{- 2}$

Ans.
(2)

$I = \frac{1}{2} ε_{0} E_{0}^{2} \times c$

$I = 53.1$ $W / m^{2}$

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