towards a wall sends a sound signal of 8000 Hz towards it. On reflection it hears a sound of frequency f. The value of f in Hz is dose to (speed of sound 
) [JEE ONLINE 10-04-2015]
A) 8516
B) 8000
C) 8424
D) 8258
Correct Answer: A
Solution :
[a]  |
  |
 |
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