A) zero
B) 2
C) 8
D) 4
Correct Answer: D
Solution :
Observer will listen two frequencies (i) First, \[{{n}_{1}}=680\left( \frac{340}{340-1} \right)\] (ii) Second, \[{{n}_{2}}=680\left( \frac{340}{340+1} \right)\] Then, \[{{n}_{1}}-{{n}_{2}}=4\]You need to login to perform this action.
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