Embibe Experts Solutions for Chapter: Electromagnetic Waves, Exercise 1: JEE Main - 1 February 2023 Shift 1

All electromagnetic wave is transporting energy in the negative $z$ direction. At a certain point and certain time the direction of electric field of the wave is along positive $y$ direction. What will be the direction of the magnetic field of the wave at that point and instant?

Match List I and List II

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Given below are two statements :

Statement I : Electromagnetic waves are not deflected by electric and magnetic field.

Statement II : The amplitude of electric field and the magnetic field in electromagnetic waves are related to each other as $E_0=\sqrt{\frac{{\mu }_0}{{\epsilon }_0}}{B}_0$.

In the light of the above statements, choose the correct answer from the options given below:

A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of $24 \mathrm{W}$. The radius of curvature of hemisphere is $10 \mathrm{cm}$ and the inner surface is completely reflecting. The force on the hemisphere due to the light falling on it is ______ $\times {10}^{-8} \mathrm{N}$.

A point source of $100 \mathrm{W}$ emits light with $5\%$ efficiency. At a distance of $5 \mathrm{m}$ from the source, the intensity produced by the electric field component is:

Match List I and List II

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Match the List-I with List-II:

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The ratio of average electric energy density and total average energy density of electromagnetic wave is: