Physics questions
20027 published questions with worked solutions.
- The excess of pressure inside a soap bubble of volume 'V₁' is twice the excess of pressure inside a second soap bubble of volume...
- One thousand small water drops of equal radii combine to form a big drop. The ratio of final surface energy to the total initial...
- A spherical solid ball of volume 'V' is made of a material of density ' _1'. It is falling through a liquid of density _2( _2<...
- In most liquids, with rise in temperature, surface tension of a liquid [MHT-CET 2022]
- A ball rises to the surface of a liquid with constant velocity. The density of the liquid is four times the density of the...
- If the terminal speed of a sphere A [density _A=7.5 kg ,m^ -3 ] is 0.4 m ,s^ -1 , in a viscous liquid [density _L=1.5 kg ,m^ -3...
- The speed of a ball of radius 2 cm in a viscous liquid is 20 cm/s. What will be the speed of a ball of radius 1 cm in same...
- Water rises to a height of 2 cm in a capillary tube. If cross-sectional area of the tube is reduced to 1/16^ th of initial area...
- Work done in increasing the size of a soap bubble from radius of 3 cm to 5 cm in milli-joule is nearly (surface tension of soap...
- Air is pushed in a soap bubble to increase its radius from 'R' to '2R'. In this case, the pressure inside the bubble [MHT-CET...
- The force required to take away a flat circular plate of radius 2 cm from the surface of water is [Surface tension of water =70...
- What should be the radius of water drop so that excess pressure inside it is 72 Nm^ -2 ? [MHT-CET 2021]
- A body of density ρ is dropped from (at rest) height 'h' into a lake of density 'δ' (δ > ρ). The maximum depth to which the body...
- The surface energy of a liquid drop is 'U'. It splits up into 512 equal droplets. The surface energy becomes [MHT-CET 2021]
- For the given solid-liquid pair, T_1 is the force due to surface tension at liquid-solid interface, T_2 is the force due to...
- The lower end of a glass capillary tube is dipped in water. Water rises to a height of 8 cm. The tube is then broken at a height...
- What will be effect on surface tension (T) if highly soluble impurity is dissolved in water? [MHT-CET 2021]
- The work done in blowing a soap bubble of radius R is 'W₁' at room temperature. Now the soap solution is heated. From the heated...
- If excess pressure inside a water drop is 60 N/m^2 , the diameter of water drop is [surface tension of water =0.072 N/m ]...
- The velocity of a small ball of mass 'M' and density 'd₁' when dropped in a container filled with glycerine becomes constant...