Questions
A man sets his watch by a whistle that is 2 km away. How much will his watch be in error. (speed of sound in air 330 m/sec)
a
3 seconds fast
b
3 seconds slow
c
6 seconds fast
d
6 seconds slow
detailed solution
Correct option is D
Time lost in covering the distance of 2 km by the sound waves t=dv=2000330=6.06sec ≈ 6secTalk to our academic expert!
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