A source .S. emitting a sound of frequency 300 Hz is fixed on block .A. while detector is fixed on block .B. detects the sound. The block .A. and .B. are simultaneously displaced towards each other through a distance of 1 m and then left to vibrate. If the velocity of sound in air is 340ms^(-1)and S , S_(A), S_(B)are identical the frequency of block A is 2Hz. Then

A source .S. emitting a sound of frequency 300 Hz is fixed on block .A

1.	A source .S. emitting a sound of frequency 300 Hz is fixed on block .A. while detector is fixed on block .B. detects the sound. The block .A. and .B. are simultaneously displaced towards each other through a distance of 1 m and then left to vibrate. If the velocity of sound in air is 340ms^(-1)and S , S_(A), S_(B)are identical the frequency of block A is 2Hz. Then
Answer» Maximum velocity of DETECTOR is `4pi ms^(-1)` Maximum FREQUENCY detected by detector is 323 Hz (approximately) Minimum frequency detected by detector is 278 Hz (approximately) The phase difference between S and D is `pi/4` Answer :A::B::C

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