Embibe Experts Solutions for Chapter: Electromagnetic Waves, Exercise 1: NEET Phase 2 (14 October 2020)

Match List - I with List - II:

Choose the correct answer from the options given below:

A capacitor of capacitance $C$, is connected across an ac source of voltage $V$, given by $V=V_0\sin \left(\omega t\right)$. The displacement current between the plates of the capacitor would then be given by___

For a plane electromagnetic wave propagating in $x$-direction, which one of the following combinations gives the correct possible directions for the electric field ($E$) and magnetic field ($B$) respectively?

The E.M. wave with shortest wavelength among the following is

The magnetic field in a plane electromagnetic wave is given by: $B_y=2\times {10}^{-7}\sin \left(\pi \times {10}^{3}x+3\pi \times {10}^{11}t\right) \mathrm{T}$. Calculate the wavelength.

Light with an average flux of $20 \mathrm{W} {\mathrm{cm}}^{-2}$ falls on a non-reflecting surface at normal incidence having surface area $20 {\mathrm{cm}}^2$. The energy received by the surface during time span of $1 \min$ is:

The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is:
($c=$ speed of electromagnetic waves)

Light with an energy flux of $25\times {10}^4 {\mathrm{W} \mathrm{m}}^{-2}$ falls on a perfectly reflecting surface at normal incidence. If the surface area is $15 {\mathrm{c}\mathrm{m}}^2,$ the average force exerted on the surface is: