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JEE Advanced 2023 Paper 2 Solutions

PARAGRAPH I

Q.No 14 - 15
S1 and S2 are two identical sound sources of frequency 656‌Hz. The source S1 is located at O and S2 moves anticlockwise with a uniform speed 4√2ms−1 on a circular path around O, as shown in the figure. There are three points P,Q and R on this path such that P and R are diametrically opposite while Q is equidistant from them. A sound detector is placed at point P. The source S1 can move along direction OP.
[Given: The speed of sound in air is 324m s−1 ]

Question : 15

Total: 52

Consider both sources emitting sound. When S2 is at R and S1 approaches the detector with a speed 4m s−1, the beat frequency measured by the detector is __________ Hz.

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