wave_mechanics dopplers_effect Question 4
Question: The frequency of a whistle of an engine is 600 cycles/sec is moving with the speed of 30 m/sec towards an observer. The apparent frequency will be (velocity of sound = 330 m/s)
[MP PMT 1989]
Options:
A) 600 cps
B) 660 cps
C) 990 cps
D) 330 cps
Show Answer
Answer:
Correct Answer: B
Solution:
$ n’=n( \frac{v}{v-v _{S}} )=600( \frac{330}{300} )=660 $
$ cps $
BETA
