A progressive wave travels in a medium M1 and enter another medium M2. In which it speed decreases to 75%. What is the ratio of amplitude of the reflected and incident wave.
1:7
7:1
3:4
4:3
Amplitude of reflected wave -
amplitude of reflected wave
- wherein
are velocity of wave in incident and transmitted wave.
amplitude of incident wave.
Option 1)
1:7
This is correct
Option 2)
7:1
This is incorrect
Option 3)
3:4
This is incorrect
Option 4)
4:3
This is incorrect
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