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A police car moving at 22 m/s, chases a motorcyclist. The police man sounds his horn at 176 Hz,

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A police car moving at 22 m/s, chases a motorcyclist. The police man sounds his horn at 176 Hz, while both of them move towards a stationary siren of frequency 165 Hz. Calculate the sp

(A) 33 m/s 

(B) 22 m/s 

(C) Zero 

(D) 11 m/s

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Correct option: (B) 22 m/s

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