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A man sitting on a swing which is moving to an angle of 60° from the vertical is blowing a whistle which has a frequency of 2.0 k Hz. The whistle is 2.0 m from the fixed support point of the swing. A sound detector which detects the whistle sound is kept in front of the swing. The maximum frequency the sound detector detected is ……. 

(a) 2.027 kHz 

(b) 1.947 kHz

(c) 9.74 kHz 

(d) 1.011 kHz

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1 Answer

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(a) 2.027 kHz

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