The magnetic field of an Electromagnetic Wave is given by
$B_y = 3 × 10^{-7} sin (10^3 x + 6.29 ×10^{12}t)$
The wavelength of the Electromagnetic Wave is
Answer & explanation
Correct answer: option 3
Given, $B_y = 3 × 10^{-7} sin (10^3 x + 6.29 ×10^{12}t)$
Comparing with the general equation
$B_y = B_0 sin (kx + ωt)$
we get $ k = 10^3$
or $ \frac{2\pi}{λ} = 10^3 $
$⇒ λ = \frac{2\pi}{10^3}$
$ = 6.28 × 10^{-3}$ m
$ = 0.63 cm$