1

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

+1

-0

The ratio of amplitude of magnetic field to the amplitude of electric field of an electromagnetic wave propagating in vacuum is

2

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

+1

-0

A plane electromagnetic wave of frequency $$20 \mathrm{~MHz}$$ travels through a space along $$x$$-direction. If the electric field vector at a certain point in space is $$6 \mathrm{~Vm}^{-1}$$, then what is the magnetic field vector at that point?

3

COMEDK 2023 Evening Shift

MCQ (Single Correct Answer)

+1

-0

What feature of the infrared waves make it useful for the haze photography?

4

COMEDK 2022

MCQ (Single Correct Answer)

+1

-0

Speed of electromagnetic wave in a medium having relative permittivity $$\varepsilon_r$$ and relative permeability $$\mu_r$$ is (speed of light in air, $$c=3\times10^8$$ m/s)

Questions Asked from Electromagnetic Waves (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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