Questions
If a wave is going from one medium to another, then
a
its frequency changes
b
its wavelength does not change
c
its speed does not change
d
its amplitude may change
detailed solution
Correct option is D
On going for one medium to another, frequency remains the same while wavelength and wave speed, both change. Amplitude may decrease or remain same depending on the fact that whether there is some absorption of energy at the boundary or not.Talk to our academic expert!
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A source of sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m/s and in air it is 300 m,/s. The frequency of sound recorded by an observer who is standing in air is
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