NEET UG PHYSICS MCQ: ELECTROMAGNETIC WAVES

1 Easy

1 of 1

Application +4 | -1

A plane electromagnetic wave travels in a medium of relative permittivity 2 and relative permeability

8.0.

If the magnitude of magnetic intensity is

\frac{6}{\pi} \times 10^{-2} \mathrm{~A} / \mathrm{m}

at a point, then the electric field at that point in ___

\mathrm{V} / \mathrm{m}

View answer and explanation

Correct option: A

1.80

Option A (1.80) is correct because the electric field is calculated using the formula

E = vB

, where

v = \frac{c}{\sqrt{\mu_r \epsilon_r}}

is the speed of light in the medium.

More Questions from ELECTROMAGNETIC WAVES

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{E_X}

{E_R}

{E_M}

60\,\,\frac{V}{m}

{E_1} = {E_{01}}\hat x\cos \left[ {2\pi v\left( {\frac{z}{c} - t} \right)} \right]

{E_2} = {E_{02}}\hat x\cos \left[ {k\left( {2z - ct} \right)} \right]

{\varepsilon _{{r_1}}}

{\varepsilon _{{r_2}}}

E = 50\sin \,(500x - 10 \times {10^{10}}t)\,v/m.

c

\mathrm{\varepsilon }

\mathrm{\mu }

\sqrt {\frac{\mathrm{\mu }}{\mathrm{\varepsilon }}}