Longitudinal Waves :: Discussion


6. It takes 2 seconds for a second wave to travel between two fixed points when the day temperature is 10°C. If the temperature rises to 30°C, the sound wave travels between the same fixed parts in?
A.1.9 sec
B.2 sec
C.2.1 sec
D.2.2 sec
Answer:  Option  A
Explanation:

v∝1/√T and t∝1/v
t2/t1 = √(T1/T2)=√((273+10)/(273+30))=√(283/303)
t2=√(283/303)×2s=1.9s.

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Published by:Michael Daani

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