A) \[340Hz\]
B) \[330Hz\]
C) \[360Hz\]
D) \[350Hz\]
Correct Answer: D
Solution :
: Here, Speed of train, \[{{v}_{T}}=10\,m\,\,{{s}^{-1}}\] Speed of sound, \[v=340\,m\,\,{{s}^{-1}}\] Frequency of whistle, \[\upsilon =340\,Hz\] The frequency of whistle heard by the stationary observer on the platform is \[\upsilon =\upsilon \left( \frac{v}{v-{{v}_{T}}} \right)=340\left( \frac{340}{340-10} \right)\] \[=340\left( \frac{340}{340-10} \right)=350Hz\]You need to login to perform this action.
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