An electromagnetic wave of frequency 
MHz passes from vacuum into a dielectric medium with relative permittivity 
. Then
Text Solution
Verified by ExpertsThe correct answer is:
B
Frequency of electromagnetic wave does not change with change in medium but wavelength and velocity of wave changes with change in medium.
Velocity of electromagnetic wave in vacuum
(i)
Velocity of electromagnetic wave in the medium
where 
be relative permeability and relative permittivity of the medium.
For dielectric medium, 
Here, 
(ii)
Wavelength of the wave in medium
(Using (i) and (ii))
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The condition under which a microwave oven heats up a food item containing water molecules most eff…
The electric field associated with an em wave in vacuum is given by where and are in volt/m, met…
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic …
The electric and the magnetic field, associated with an . wave, propagating along the ‐axis, can …
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is
The velocity of electromagnetic radiation in a medium of permittivity and permeability is given by