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The magnetic field in a plane electromag...

The magnetic field in a plane electromagnetic wave is given by
`B_(y) = 2 xx 10^(-7) sin (0.5 xx 10^(3)x + 1.5 xx 10^(11) t)`.
This electromagnetic wave is

A

`2 xx 10^(-7)` m

B

`2 xx 10^(3)` m

C

`pi xx 10^(-3)` m

D

`pi xx 10^(3)` m

Text Solution

Verified by Experts

The correct Answer is:
A
Wavelength `(lambda) = (2pi)/( k) = (2pi)/( pi xx 10^3)`
`rArr lambda = 2 xx 10^(-3)` m
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