Equation of a plane progressive wave is given by 
. On reflection from a denser medium its amplitude becomes 
. of the amplitude of the incident wave. The equation of the reflected wave is:
A
.
B
C
D
.
Text Solution
Verified by ExpertsThe correct answer is:
B
Amplitude of reflected wave
units
Given equation of incident wave
Equation of reflected wave is
At denser medium phase changes by 
]
The positive sign is due to reversal of direction of propagation
So, 
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