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Excess Pressure in Drops and Bubbles for JEE: 18 solved questions

Real JEE paper questions on excess pressure in drops and bubbles, part of mechanical properties of fluids. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2004 to 2025. No sign-in needed to read them.

What this topic asks

• Excess pressure — 11 questions
• Two bubbles and common surfaces — 7 questions

All 18 questions with solutions

• A soap bubble, blown by a mechanical pump at the mouth of a tube, increases in volume with time at a constant… JEE Main 12th Jan 2nd Shift 2019
• An air bubble of radius 0.1 cm lies at a depth of 20 cm below the free surface of a liquid of density 1000 kg… JEE Main 24th Jan 1st Shift 2025
• The pressure inside a soap bubble is greater than the pressure outside by an amount (given: R= radius of the… JEE Main 6th April 2nd Shift 2024
• The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio… JEE Main 9th April 2nd Shift 2024
• The pressures inside two soap bubbles are 1.01 and 1.02 atmosphere respectively. The ratio of their volumes is JEE Main 3rd Sept 1st Shift 2020
• An air bubble of radius 0.1 cm is in a liquid having surface tension 0.06 N m⁻¹ and density 10³ kg m⁻³. The p… JEE Main Online 2014
• The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B. I… JEE Main 3rd April 2nd Shift 2025
• An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of a liquid having surf… JEE Main 23rd Jan 2nd Shift 2025
• A liquid column of height 0.04 cm balances the excess pressure of a soap bubble of a certain radius. If the d… JEE Main 8th April 1st Shift 2024
• There is an air bubble of radius 1.0 mm in a liquid of surface tension 0.075 N m⁻¹ and density 1000 kg m⁻³ at… JEE Main 15th April 1st Shift 2023
• The excess pressure inside a liquid drop is 500 N m⁻². If the radius of the drop is 2 mm, the surface tension… JEE Main 30th June 1st Shift 2022
• Two spherical soap bubbles of radii r₁ and r₂ in vacuum combine under isothermal conditions. The resulting bu… JEE Main 25th July 2nd Shift 2021
• When two soap bubbles of radii a and b (b>a) coalesce, the radius of curvature of the common surface is JEE Main 17th March 1st Shift 2021
• A small soap bubble of radius 4 cm is trapped inside another bubble of radius 6 cm without any contact. Let P… JEE Main Online 2018
• If two soap bubbles of different radii are connected by a tube, AIEEE 2004
• Two soap bubbles of radius 2 cm and 4 cm respectively are in contact with each other. The radius of curvature… JEE Main 22nd Jan 1st Shift 2025
• A spherical soap bubble of radius 3 cm is formed inside another spherical soap bubble of radius 6 cm. If the… JEE Main 27th July 2nd Shift 2022
• A soap bubble of radius 3 cm is formed inside another soap bubble of radius 6 cm. The radius of an equivalent… JEE Main 26th Aug 1st Shift 2021