A) 33 m/s
B) 22 m/s
C) Zero
D) 11 m/s
Correct Answer: B
Solution :
\[{{n}_{1}}\] = Frequency of the police car horn observer heard by motorcyclist \[{{n}_{2}}\] = Frequency of the siren heard by motorcyclist. v2 = Speed of motor cyclist \[{{n}_{1}}\] = \[\frac{330-v}{330-22}\times 176\,\,;\,\,{{n}_{2}}=\frac{330+v}{330}\times 165\] \[\because \] \[{{n}_{1}}-{{n}_{2}}=0\Rightarrow v=22\]\[m/s\].
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