NEET UG PHYSICS MCQ: ELECTROMAGNETIC WAVES

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The electric and the magnetic field, associated with an e.m. wave, propagating along the

\mathrm{ + }\,\mathrm{z - }\,\mathrm{axis,}

can be represented by

View answer and explanation

Correct option: A

\left[ {\overrightarrow E = {E_0}\hat i,\,\,\overrightarrow B = {B_0}\hat j} \right]

Option A

\left[ {\overrightarrow E = {E_0}\hat i,\\,\overrightarrow B = {B_0}\hat j} \right]

is correct because the electric and magnetic fields must be perpendicular to each other and to the direction of propagation (+z-axis).

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

{\varepsilon _{{r_1}}}

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

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\mathrm{\varepsilon }

\mathrm{\mu }

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