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Physics
When a wave undergoes refraction
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Q. When a wave undergoes refraction
J & K CET
J & K CET 2009
Waves
A
its frequency changes
4%
B
its amplitude changes
12%
C
its velocity changes
50%
D
both amplitude and frequency change
35%
Solution:
The speed of a wave decreases when it travels from rarer to denser medium whereas speed increases when wave travels from rarer to denser medium.