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List-I shows four configurations made of straight and semi-circular narrow tubes containing air. A sound wave of wavelength = 0.29 m enters these structures at the point S and a sound detector is placed at D. Between the points S and D, the sound travels only through the tubes. List-II contains the possible smallest values of l (refer to the figures) for which the detector D records maximum amplitude. Ignore effects of sharp corners. [Given (15 ) = 0.97] Choose the option that best describes the match between the entries in List-I to those in List-II.
- P→4, Q→3, R→5, S→1
- P→4, Q→3, R→1, S→5
- P→3, Q→4, R→1, S→2
- P→3, Q→4, R→5, S→2
JEE Advanced 2026 Paper 1