Mechanical Properties of Fluids questions
539 published questions with worked solutions.
- A 20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If the entire arrangement is put in a freely falling...
- If the terminal speed of a sphere of gold (density = 19.5 kg/m^3 ) is 0.2 m/s in a viscous liquid (density = 1.5 kg/m^3 ) of the...
- 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 < _1)....
- Work done in increasing the size of a soap bubble from a radius of 3 cm to 5 cm is nearly (Surface tension of soap solution =...
- Water is flowing continuously from a tap having an internal diameter 8 10^ -3 m. The water velocity as it leaves the tap is 0.4...
- At a given place where acceleration due to gravity is 'g' m/s^2 , a sphere of lead of density 'd' kg/m^3 is gently released in a...
- In which one of the following cases, will the liquid flow in a pipe be most streamlined?
- As the temperature of water increases, its viscosity
- A rain drop of radius 0.3 mm has a terminal velocity in air 1 m ,s^ -1 . The viscosity of air is 18 10^ -5 poise. Find the...
- A spherical ball of radius 3.0 10^ -4 m and density 10^4 kg ,m^ -3 falls freely under gravity through a distance h before...
- The terminal speed attained by an aluminium sphere of radius 1 mm falling through water at 20^ will be close to (Assume laminar...
- Two solid spheres of same metal but of mass M and 8M fall simultaneously on a viscous liquid and their terminal velocities are v...
- If the terminal speed of a sphere of gold (density = 19.5 kg ,m^ -3 ) is 0.2 m ,s^ -1 in viscous liquid (density = 1.5 kg ,m^ -3...
- A solid sphere falls with a terminal velocity v in CO_2 gas. If it is allowed to fall in vacuum, then
- Speed of a ball of 2 cm radius in a viscous liquid is 20 cm ,s^ -1 . Then the speed of 1 cm radius of ball in the same liquid is
- Surface tension vanishes at
- The diameter of one drop of water is 0.2 cm. The work done in breaking one drop into 1000 droplets will be (Given, S_ water = 7...
- The surface tension of a liquid is 5 N ,m^ -1 . If a film is held on a ring of area 0.02 m^2 , its total surface energy is about
- A water film is formed between two parallel wires of 10 cm length. The distance of 0.5 cm between the wires is increased by 1 mm....
- The excess pressure inside a spherical drop of water is four times that of another drop. Then, their respective mass ratio is
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