Wave Mechanics Question 804
Question: 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)
[MP PET 1991]
Options:
A) 3 seconds fast
B) 3 seconds slow
C) 6 seconds fast
D) 6 seconds slow
Show Answer
Answer:
Correct Answer: D
Solution:
Time lost in covering the distance of 2 $ km $ by the sound waves $ t=\frac{d}{v}=\frac{2000}{330}=6.06 $ sec » 6 sec
BETA
