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Ratio of sizes of two bubbles or drops from their excess pressures

This type of question, asked 16 times: 2 May 2023 S1, 3 May 2023 S1, 3 May 2023 S2, 4 May 2023 S1, 10 May 2023 S2, 9 May 2024 S1, 12 May 2024 S1, 22 Apr 2025 S2, 23 Apr 2025 S1, 15 Apr 2026 S1, 15 Apr 2026 S2, 17 Apr 2026 S1, 17 Apr 2026 S2, 19 Apr 2026 S1, 13 May 2026 S2, 14 May 2026 S2. All 17 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2 May 2023 S1

    16
    The pressure inside a soap bubble A is 1.01 atmosphere and that in a soap bubble B is 1.02 atmosphere. The ratio of volume of A to that of B is

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  2. Question 2

    3 May 2023 S1

    32
    The pressure inside two soap bubbles, (A) is 1.01 and that of (B) is 1.02 atmosphere respectively. The ratio of their respective radii (A to B) is (outside pressure =1=1 atm.)

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  3. Question 3

    3 May 2023 S2

    33
    The pressure inside a soap bubble A is 1.01 atmosphere and that in a soap bubble B is 1.02 atmosphere. The ratio of volume of bubble A to that of B is [Surrounding pressure = 1 atmosphere]

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  4. Question 4

    4 May 2023 S1

    38
    The excess pressure inside a spherical drop of water A is four times that of another drop B. Then the ratio of mass of drop A to that of drop B is

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  5. Question 5

    10 May 2023 S2

    8
    Two soap bubbles having radii 'r1r_1' and 'r2r_2' have inside pressure 'P1P_1' and 'P2P_2' respectively. If P0P_0 is external pressure then ratio of their volumes is

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  6. Question 6

    9 May 2024 S1

    4
    The excess of pressure in a first soap bubble is three times that of other soap bubble. Then the ratio of the volume of first bubble to other is

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  7. Question 7

    12 May 2024 S1

    42
    The excess pressure inside a first spherical drop of water is three times that of second spherical drop of water. Then the ratio of mass of first spherical drop to that of second spherical drop is

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  8. Question 8

    22 Apr 2025 S2

    30
    The excess pressure inside a soap bubble is 1.5 times the excess pressure inside a second soap bubble. The volume of the second bubble is ' xx ' times the volume of the first bubble. The value of ' xx ' is

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  9. Question 9

    23 Apr 2025 S1

    4
    The excess pressure inside first soap bubble is three times that of a second soap bubble. The ratio of volumes of the first to second bubble

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  10. Question 10

    15 Apr 2026 S1

    111
    The excess pressure inside the first soap bubble of radius R1R_1 is three times that inside the second soap bubble of radius R2R_2. The ratio of volumes of the first bubble to second bubble is

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  11. Question 11

    15 Apr 2026 S2

    111
    The excess pressure inside the first soap bubble of radius R1R_1 is three times that inside the second soap bubble of radius R2R_2. The ratio of volumes of the first to second bubble is

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  12. Question 12

    17 Apr 2026 S1

    109
    The excess pressure inside a spherical water drop A is four times that of another water drop B. Then, the ratio of the mass of water drop A to that of drop B is

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  13. Question 13

    17 Apr 2026 S2

    111
    Two soap bubbles, A and B, have radii in the ratio 3:23 : 2. The excess pressure inside the bubble A to that of B is in the ratio

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  14. Question 14

    17 Apr 2026 S2

    110
    The excess pressure inside the first soap bubble is three times that inside the second soap bubble. The ratio of the volume of the first soap bubble to the volume of the second soap bubble is

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  15. Question 15

    19 Apr 2026 S1

    110
    The pressures inside two soap bubbles A and B are 1.021.02 atmosphere and 1.041.04 atmosphere respectively. The ratio of volume of bubble A to that of bubble B is (outside pressure =1= 1 atmosphere)

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  16. Question 16

    13 May 2026 S2

    113
    The excess pressure inside a spherical drop of water is four times that of another drop. Their respective mass ratio is

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  17. Question 17

    14 May 2026 S2

    110
    The excess pressure inside a spherical drop of water is four times that of another drop. Then, their respective mass ratio is

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