Skip to main content
Back to ELECTROMAGNETIC WAVES

NEET UG PHYSICS MCQ: ELECTROMAGNETIC WAVES

1 Medium
1 of 1
Understanding +4 | -1
Identify the correct statements from the following descriptions of various properties of electromagnetic waves.
(A) In a plane electromagnetic wave electric field and magnetic field must be perpendicular to each other and direction of propagation of wave should be along electric field or magnetic field.
(B) The energy in electromagnetic wave is divided equally between electric and magnetic fields.
(C) Both electric field and magnetic field are parallel to each other and perpendicular to the direction of propagation of wave.
(D) The electric field, magnetic field and direction of propagation of wave must be perpendicular to each other.
(E) The ratio of amplitude of magnetic field to the amplitude of electric field is equal to speed of light.
Choose the most appropriate answer from the options given below
View answer and explanation
Correct option: B
(B) and (D) only
Option B ((B) and (D) only) is correct. The energy in an electromagnetic wave is divided equally between electric and magnetic fields, and the electric field, magnetic field, and direction of propagation are mutually perpendicular.

More Questions from ELECTROMAGNETIC WAVES

Practice All Chapter MCQs →
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⁡[2πv(zc−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(2z−ct)]{E_2} = {E_{02}}\hat x\cos \left[ {k\left( {2z - ct} \right)} \right] in medium, where the wave number k and frequency ν refer to their values in air. The medium is non-magnetic.
If εr1{\varepsilon _{{r_1}}} and εr2{\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⁡ (500x−10×1010t) 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 ε\mathrm{\varepsilon } and permittivity μ\mathrm{\mu }, then με\sqrt {\frac{\mathrm{\mu }}{\mathrm{\varepsilon }}} is the In an E.M. wave the average energy density is associated with:-
Type at least 2 characters or jump directly:
🩺 NEET MCQs 🔬 JEE MCQs 🎯 JEE College Predictor Study guides 📊 Dashboard
🔓

Save your learning progress

Sign in with a free account to save your practice answers and quiz results, then return to them when you revise.

Continue with Free Account →