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Resonance tube: successive resonating lengths, end correction and speed of sound

This type of question, asked 3 times: 3 May 2023 S2, 19 Apr 2026 S2, 20 Apr 2026 S1. All 3 questions below, oldest first.

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  1. Question 1

    3 May 2023 S2

    6
    The end correction of resonance tube is 1 cm. If the shortest length resonating with a tuning fork is 15 cm, the next resonating length will be

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  2. Question 2

    19 Apr 2026 S2

    120
    In a resonance tube open at one end, the end correction is 1.11.1 cm. If the shortest length of resonating air column with a tuning fork is 1818 cm, the next resonating length will be

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  3. Question 3

    20 Apr 2026 S1

    122
    A tuning fork of frequency 'nn' is held near the open end of a tube which is dipped in water and length of the tube is adjusted until resonance occurs. If the two shortest lengths that produce resonance are l1l_1 and l2l_2, the speed of sound in air is (neglect end correction)

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