Physics questions
20027 published questions with worked solutions.
- Two soap bubbles have radii in the ratio of 2:1. What is the ratio of excess pressures inside them?
- At critical temperature, the surface tension of a liquid is
- A frame made of metallic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic wire...
- Two spherical soap bubbles of radii a and b in vacuum coalesce under isothermal conditions. The resulting bubble has a radius...
- When a pinch of salt or any other salt which is soluble in water is added to water, its surface tension
- Two capillary tubes of radii 0.2 cm and 0.4 cm are dipped in the same liquid. The ratio of heights through which liquid will rise...
- By inserting a capillary tube upto a depth l in water, the water rises to a height h. If the lower end of the capillary tube is...
- A wire of length l metre, made of a material of specific gravity 8 is floating horizontally on the surface of water. If it is not...
- Water rises to a height of 10.3 cm in a capillary of height 18 cm above the water level. If the tube is cut at a height of 12 cm...
- Water rises to a height of 10 cm in a capillary tube and mercury falls to a depth of 3.42 cm in the same capillary tube. If the...
- The amount of work done in blowing a soap bubble such that its diameter increases from d to D is (where, S = surface tension of...
- Several spherical drops of a liquid of radius r coalesce to form a single drop to radius R. If S is surface tension and V is...
- A drop of some liquid of volume 0.04 cm^3 is placed on the surface of a glass slide. Then, another glass slide is placed on it in...
- A capillary tube is taken from the earth to the surface of the moon. The rise of the liquid column on the moon (acceleration due...
- Water rises in a capillary tube to a height h. Choose false statement regarding capillary rise from the following.
- One end of a uniform glass capillary tube of radius r=0.025 cm is immersed vertically in water to a depth h=1 cm. The excess...
- A glass capillary of radius 0.4 mm is inclined at 60^ with the vertical in water. Find the length of water in the capillary tube....
- Water rises in a capillary tube of radius r upto a height h. The mass of water in a capillary is m. The mass of water that will...
- A small metal sphere of mass M and denisty d_1, when dropped in a jar filled with liquid moves with terminal velocity after...
- The work done in blowing a soap bubble of radius R is W. The work done in blowing a bubble of radius 2R of the same soap solution...