Electromagnetic Waves: NEET Physics Previous Year Questions

244 previous year questions from Electromagnetic Waves. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be [NEET 2020]$
2. $The ratio of average electric energy density and total average energy density of electromagnetic wave is:$
3. $The oscillating magnetic field in a plane electromagnetic wave is given by B_{y} = 5 \times 1 0^{- 6} sin 1000 π (5 x - 4 \times 1 0^{8} t) T . The amplitude of electri\dots$
4. $The ratio of contributions made by the electric field and magnetic field components, to the intensity of an electromagnetic wave is (where, c = speed of electromagnetic w\dots$
5. $In an electromagnetic wave in free space the root mean square value of the electric field is E_{rms} = 6 Vm^{- 1} . The peak value of the magnetic field i\dots$
6. $Two slits in Young's experiment have widths in the ratio 1 : 25 . The ratio of intensity at the maxima and minima in the interference pattern\dots$
7. $A plane electromagnetic wave propagating in x -direction is described by\dots$
8. $The electric and magnetic field of an electromagnetic wave are$
9. $Angular width of the central maxima in the Fraunhofer diffraction for is . When the same slit is illuminated by another monochromatic li…$
10. $A layer of atmosphere that reflects medium frequency radio waves which is ineffective during night is$
11. $Light wave traveling in air along x-direction is given by E_{y} = 540 sin π \times 1 0^{4} (x - ct) V m^{- 1} . Then, the peak value of magnetic field of wav\dots$
12. $The electric field part of an electromagnetic wave in a medium is represented by E_{x} = 0;\dots$
13. $The electric and the magnetic field, associated with an e . m . wave, propagating along the + z ‐axis, can be represented by$
14. $A plane electromagnetic wave is propagating along the direction \frac{i ^ + j ^}{2}, with its polarization along the direction k^. The correct from\dots$
15. $In Young’s double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelength λ_{1} = 12000 Å and λ_{2} = 10000 Å. At what minimum dist\dots$
16. $The magnetic field of an E.M. wave is given by B = (\frac{3}{2} i + \frac{1}{2} j) 30 sin (ω (t - \frac{z}{c})) (S.I. Units). The correspond\dots$
17. $The source of electromagnetic wave can be a charge$
18. $The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant k = 3 and permeability of μ = 2 μ_{0}, is (μ_{0} = permea\dots$
19. $An electromagnetic wave of intensity enters in a medium of refractive index ' without any loss. The ratio of the magnitudes of electric fields,…$
20. $A 2 mW laser operates at a wavelength of 500 nm . The number of photons that will be emitted per second is: [Given Planck's constant\dots$
21. $The velocity of electromagnetic radiation in a medium of permittivity ϵ_{0} and permeability μ_{0} is given by$
22. $A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of magnetic intensity is 4.5 x 10-2 A m^{- 1} \dots$
23. $The electric and the magnetic fields associated with an electromagnetic wave propagating along the z -axis, can be represented by$
24. $A plane electromagnetic wave of frequency 35 MHz travels in free space along the X-direction. At a particular point (in space and time) E = 9.6 j V / m . The value o\dots$
25. $In communication system, the process of superimposing a low frequency signal on a high frequency wave is known as$

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Electromagnetic Waves: NEET Physics Previous Year Questions

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