Published by:
CGP EDU Academic Team
Published on: August 13, 2026
An EM wave from air enters a medium. The electric fields are
in medium, where the wave number 
and frequency 
refer to their values in air. The medium is non-magnetic. If 
and 
refer to relative permittivities of air and medium respectively, which of the following options is correct?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
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