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MHT CET 2024 (2 May, Shift 1) · Excess Pressure: Drops & Bubbles

Excess Pressure: Drops & Bubbles question from MHT CET 2024 (2 May, Shift 1)

Q31MHT CET 2024 · 2 MAY · SHIFT 1Medium

Excess Pressure: Drops & Bubbles

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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Answer: (b)

Excess pressures (outside 1 atm): $\Delta P_A = 0.01$ atm, $\Delta P_B = 0.02$ atm.
$\frac{R_A}{R_B} = \frac{\Delta P_B}{\Delta P_A} = 2$
$\frac{V_A}{V_B} = 2^3 = 8$
So the answer is (b) $8 : 1$ .

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