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

In an electromagnetic wave, the ratio of energy densities of electric and magnetic fields is ______.
Fill in the blank with the correct answer from the options given below
Match Column-1 with Column-2. In the table given below, certain EM waves are listed in Column-1 and their uses in Column-2 not necessarily in that order.
Table
Choose the correct matching of waves and their uses from the options given below:
Match Electromagnetic waves listed in Column I with Production method/device in Column II.
Table
The correctly matched combination is as in option :

Which of the following, the correct arrangement of electromagnetic spectrum in decreasing order of wavelength is ______.
Fill in the blank with the correct answer from the options given below

\( \text{ The electric field of an EM wave in free space is given by } E = 10 \cos(10^7 t + kx) \, \hat{j} \, \text{V/m, where } t \text{ and } x \text{ are in seconds and meters, respectively. It can be inferred that:}\)
Which of the following pairs of statements are correct:
(A) Wavelength λ is 188.4 m,
(B) Wave number k is 0.33 rad/m,
(C) Wave amplitude is 10 V/m,
(D) Wave is propagating along +x-direction.