Physics · 2025
JEE Main · 3 April 2025, Shift 2 · Q47
The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume of the bubble A is n…
The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume of the bubble A is $\displaystyle n$ times the volume of the bubble B , then, the value of $\displaystyle n$ is $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
8
More from Surface Tension and Viscosity
- Eight mercury drops, each of radius r, coalesce to form a bigger drop. The surface energy released in this process is ____. (S is the surface tension…2026
- The terminal velocity of a metallic ball of radius 6 mm in a viscous fluid is 20 cm/s. The terminal velocity of another ball of same material and…2026
- An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of a liquid having surface tension 0.095 J / m^2 and density…2025
- The surface tension of a soap bubble is 0.03 N / m. The work done in increasing the diameter of bubble from 2 cm to 6 cm is α π × 10^-4 J. The value…2026
- If an air bubble of diameter 2 mm rises steadily through a liquid of density 2000 kg / m^3 at a rate of 0.5 cm/s, then the coefficient of viscosity…2026
- Two soap bubbles of radius 2 cm and 4 cm, respectively, are in contact with each other. The radius of curvature of the common surface, in cm, is ____.2025
- In the experiment for measurement of viscosity ' η ' of given liquid with a ball having radius R, consider following statements. A. Graph between…2025
- The surface tension of a soap solution is 3.5 × 10^-2 N / m. The work required to increase the radius of a soap bubble from 1 cm to 2 cm is α × 10^-6…2026
JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.