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NEET UG PHYSICS MCQ: ELECTROMAGNETIC WAVES

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Phase difference between electric field and magnetic field associated with a plane
polarized light is
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Correct option: A
zero
Option A (zero) is correct because the electric and magnetic fields in a plane polarized light wave are in phase.

More Questions from ELECTROMAGNETIC WAVES

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What is order of energy of X-rays (EX{E_X}), radio waves (ER{E_R}) and microwave (EM{E_M})? The amplitude of the sinusoidally oscillating electric field of plane wave is 60  Vm60\,\,\frac{V}{m}. Then the amplitude of the magnetic field is An EM wave from air enters a medium. The electric fields are E1=E01x^cos⁑[2Ο€v(zcβˆ’t)]{E_1} = {E_{01}}\hat x\cos \left[ {2\pi v\left( {\frac{z}{c} - t} \right)} \right] in air and E2=E02x^cos⁑[k(2zβˆ’ct)]{E_2} = {E_{02}}\hat x\cos \left[ {k\left( {2z - ct} \right)} \right] in medium, where the wave number k and frequency Ξ½ refer to their values in air. The medium is non-magnetic.
If Ξ΅r1{\varepsilon _{{r_1}}} and Ξ΅r2{\varepsilon _{{r_2}}} refer to relative permittivities of air and medium respectively, which of the following options is correct?
Electric field in a plane electromagnetic wave is given by E=50sin⁑ (500xβˆ’10Γ—1010t) v/m.E = 50\sin \,(500x - 10 \times {10^{10}}t)\,v/m. The velocity of electromagnetic wave in this medium is
(Given, cc = speed of light in vacuum)
If an electromagnetic wave is propagation in a medium with permeability Ξ΅\mathrm{\varepsilon } and permittivity ΞΌ\mathrm{\mu }, then ΞΌΞ΅\sqrt {\frac{\mathrm{\mu }}{\mathrm{\varepsilon }}} is the In an E.M. wave the average energy density is associated with:-
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πŸ”“

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