Physics questions
20027 published questions with worked solutions.
- In a capillary tube having cross-section A, water rises to a height 'h'. If cross-sectional area is reduced to A 9 , the rise of...
- Water rises upto a height 10 cm in a capillary tube. It will rise to a height which is much more than 10 cm in a very long...
- A big water drop is divided into 8 equal droplets. P_s and P_B be the excess pressure inside a smaller and bigger drop...
- Water rises in a capillary tube of radius 'r' up to a height 'h'. The mass of water in a capillary is 'm'. The mass of water that...
- A drop of liquid of density 'ρ' is floating half immersed in a liquid of density 'd'. If 'T' is the surface tension, then the...
- 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 ms^ -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 milijoule is nearly (surface tension of soap...
- A glass rod of radius 'r_1' is inserted symmetrically into a vertical capillary tube of radius 'r_2' (r_1 < r_2) such that their...
- Water rises upto a height of 4 cm in a capillary tube. The lower end of the capillary tube is at a depth of 8 cm below the water...
- Pressure inside two soap bubbles are 1.01 atm and 1.03 atm. The ratio between their volumes is (Pressure outside the soap bubble...
- A thin metal of disc of radius 'r' floats on water surface and bends the surface downwards along the perimeter making an angle '...
- The work done in blowing a soap bubble of radius 'R' is 'W_1' and that of radius '2R' is W_2. The ratio of W_1 to W_2 is [MHT-CET...
- Water rises to a height of 20 mm in a capillary tube of cross-sectional area 'A'. If the area of cross-section of the tube is...
- Which one of the following statements is 'NOT' true about the angle of contact of a liquid? [MHT-CET 2020]
- A metal wire of density ' ' floats on water surface horizontally. If it is NOT to sink in water, then maximum radius of wire is...
- A liquid drop having surface energy 'E' is spread into 216 droplets of the same size. The final surface energy of the droplets is...
- A liquid drop of density ' ' is floating half immersed in a liquid of density 'd'. Diameter of the liquid drop is ( > d, g =...