AP EAMCET Engineering 2018 Apr 23 Shift 2 Paper

A source S emitting sound of frequency 288 Hz is fixed on block B which is attached to the free end of a spring S2 and an observer O is on block A which is attached to the free end of spring S1 ; as shown in figure. The blocks A and B are simultaneouslydisplaced towards each other through a distance of 0.5 m and then left to oscillate. If the angular velocity of each block is 40 rads ‌–1 , the maximum frequency observed by the observer is (speed of sound in air is 340 m s ‌–1)