Published by:
CGP EDU Academic Team
Published on: August 21, 2026
A linearly polarised electromagnetic wave given as 
is incident normally on a perfectly reflecting infinite wall at 
. Assuming, that the material of the wall is optically inactive, the reflected wave will be given as
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
When a wave is reflected from denser medium, then the type of wave doesn't change but only its phase changes by 
or 
radian.
Thus, for the reflected wave 
and
additional phase of 
in the incident wave.
Given, here the incident electromagnetic wave,
The reflected electromagnetic wave is given by
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