List of top Physics Questions on Electromagnetic Waves asked in CUET (UG)

The velocity of an electromagnetic wave in a medium with \(\varepsilon_r=2\) and \(\mu_r=18\) is
The oscillating electric and magnetic field vectors of an electromagnetic wave are in
The source of electromagnetic waves can be
Arrange the following media (characterised by their relative dielectric permittivities \((\varepsilon_r)\) and relative magnetic permeabilities \((\mu_r)\)) according to the velocity of an electromagnetic wave propagating in them in ascending order. (A) \(\varepsilon_r=4,\ \mu_r=400\) (B) \(\varepsilon_r=3,\ \mu_r=300\) (C) \(\varepsilon_r=4,\ \mu_r=250\) (D) \(\varepsilon_r=5,\ \mu_r=150\) Choose the correct answer from the options given below:

Match the following electromagnetic waves with their correct energy order.  

Column IColumn II
(A)\(\text{Gamma rays}\)(I)\(\text{Lowest frequency}\)
(B)\(\text{X-rays}\)(II)\(\text{Highest energy}\)
(C)\(\text{Microwaves}\)(III)\(\text{Used in radar communication}\)
(D)\(\text{Radio waves}\)(IV)\(\text{Used in medical imaging}\)

Choose the correct answer from the options given below:

A magnetic field vector in an electromagnetic wave is represented by \[ \vec{B} = B_0 \sin\left(2\pi \nu t - \frac{2\pi x}{\lambda}\right)\hat{j} \] Its associated electric field vector is ________.
An electromagnetic wave travels in free space along the \(x\)-direction. At a particular point in space and time, \[ \vec{B} = 2 \times 10^{-7}\,\hat{j}\,\text{T} \] is associated with this wave. The value of corresponding electric field \(\vec{E}\) at this point is __________ V/m.
Electromagnetic waves are:
The ratio of electric field amplitudes and magnetic field amplitudes in an electromagnetic wave in vacuum is equal to:
Two long parallel wires carrying currents in the same direction will:
Which segment of the electromagnetic wave spectrum is primarily used in line-of-sight radar systems for aircraft navigation and to cook food inside kitchen appliances?
Two long, straight parallel wires separated by a distance \( r \) carry steady currents \( I_1 \) and \( I_2 \) in the exact same direction. What type of magnetic force interaction do they experience?
The electric and magnetic field vectors of a plane electromagnetic wave propagating along the positive x-axis are represented by \( \vec{E} \) and \( \vec{B} \) respectively. Which of the following vector expressions correctly defines the direction of propagation of this wave?
Which of the following choices correctly sequences the designated segments of the electromagnetic wave spectrum in an increasing order of their respective photon energies?
An electromagnetic wave going through vacuum is described by \( E = E_0 \sin(kx - \omega t) \), \( B = B_0 \sin(kx - \omega t) \), then: