Surface Energy

JEE Main Physics · Surface Tension and Viscosity · 17 questions, latest first

• 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
• 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
• A soap bubble of surface tension 0.04 N / m is blown to a diameter of 7 cm. If (15000-x) μ J of work is done in blowing it…202624 January, Shift 2 · Q48
• Two water drops each of radius ' r ' coalesce to form a bigger drop. If ' T ' is the surface tension, the surface energy released…20252 April, Shift 2 · Q31
• The amount of work done to break a big water drop of radius ' R ' into 27 small drops of equal radius is 10 J. The work done…202524 January, Shift 1 · Q32
• A big drop is formed by coalescing 1000 small droplets of water. The ratio of surface energy of 1000 droplets to that of energy…20246 April, Shift 1 · Q54
• A soap bubble is blown to a diameter of 7 cm. 36960 erg of work is done in blowing it further. If surface tension of soap…20244 April, Shift 1 · Q53
• A big drop is formed by coalescing 1000 small droplets of water. The surface energy will become:20241 February, Shift 2 · Q37
• A big drop is formed by coalescing 1000 small identical drops of water. If E_1 be the total surface energy of 1000 small drops of…202430 January, Shift 2 · Q53
• A small liquid drop of radius R is divided into 27 identical liquid drops. If the surface tension is T, then the work done in the…202429 January, Shift 2 · Q37
• The surface tension of soap solution is 3.5 × 10^-2 Nm^-1. The amount of work done required to increase the radius of soap bubble…202311 April, Shift 2 · Q52
• A mercury drop of radius 10^-3 m is broken into 125 equal size droplets. Surface tension of mercury is 0.45 Nm^-1. The gain in…20231 February, Shift 1 · Q18
• If 1000 droplets of water of surface tension 0.07 N / m, having same radius 1 mm each, combine to from a single drop. In the…202331 January, Shift 1 · Q9
• Surface tension of a soap bubble is 2.0 × 10^-2 Nm^-1. Work done to increase the radius of soap bubble from 3.5 cm to 7 cm will…202329 January, Shift 1 · Q13
• A spherical drop of liquid splits into 1000 identical spherical drops. If u_i is the surface energy of the original drop and u_f…202325 January, Shift 2 · Q29