It takes 2.0 seconds for a sound wave to travel between two fixed points when the day temperature is 10oC. If the temperature rise to 30oC the sound wave travels between the same fixed parts in
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a
1.9 sec
b
2.0 sec
c
2.1 sec
d
2.2 sec
answer is A.
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Detailed Solution
Suppose the distance between two fixed points is d then t=dvalso v∝T⇒t1t2=v2v1=T2T1⇒2t2=303283⇒t2=1.9sec
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It takes 2.0 seconds for a sound wave to travel between two fixed points when the day temperature is 10oC. If the temperature rise to 30oC the sound wave travels between the same fixed parts in