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Questions  

Ultrasonic, Infrasonic and audible waves travel through a medium with speeds Vu,Vi and Va respectively, then

a
Vu, Vi and Va are nearly equal
b
Vu≥Va≥Vi
c
Vu≤Va≤Vi
d
Va≤Vu and Vu≈Vi

detailed solution

Correct option is A

All are sound waves with different frequencies.

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