Surface Tension and Viscosity

JEE Main Physics · 6 questions

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• A spherical liquid drop of radius R acquires the terminal velocity v_1 when falls through a gas of viscosity η. Now the drop is…20268 April, Shift 2 · Q34
• Eight mercury drops, each of radius r, coalesce to form a bigger drop. The surface energy released in this process is ____. (S is…20265 April, Shift 2 · Q33
• 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…20264 April, Shift 1 · Q47
• 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 ×…20262 April, Shift 2 · Q33
• 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…20262 April, Shift 2 · Q35
• A liquid drop of diameter 2 mm breaks into 512 droplets. The change in surface energy is α × 10^-6 J. The value of α is ____.…20262 April, Shift 1 · Q45