When the piston of common water pump is lowered its foot valve opens.

When the piston of common water pump is raised its piston valve opens.

When water is converted into ice, its entropy

When common salt is dissolved in water

A cylindrical tube partially filled with water is in resonance with a tuning fork when height of air column is 0.1 m. When the level of water is lowered, the resonance is again observed at 0.35m. The end correction is –

A cylinder is fitted with a piston, beneath which is a spring, as in the figure. The cylinder is open at the top. Friction is absent. The spring is 3600 N//m . The piston has a negligible mass and a radius of 0.025m (a) when air beneath the piston is completely pumped out, how much does the atmospheric pressure cause the spring to compress? (b) How much work does the atmospheric pressure do in compressing the spring?

A capillary tube is dipped in water to a depth and the water rises to a height h( lt l) in the capillary tube. The lower end of the tube is closed in water by putting a lower over it. The tube is now taken out and the thumb is removed from the lower end and it kept open. The length of liquid column in the tube will be

In a resonace tube experiment, the first resonance is obtained when the level of the water in the tube is at 20 cm from the open end. Resonace will also be obtained when the distance of the water level from the open end is

An ideal gas at NTP is enclosed in an adiabatic vertical cylinder havin an area of cross section A=27 cm^(2) between two light movable pistons as shown in figure. Spring with force constant K=37-- N//m is in a relaxed state initially. Now the lower position is moved upwards a distance h//2 , h being the initial length of gas column . It is observed that the upper piston moves up by a distance h//16 . Final temperature of gas 4//3 xx 273 K . Take gamma for the gas to be 3//2 . When the lower pistone is moved upwards a distance h//2 , the compression.

An ideal gas at NTP is enclosed in an adiabatic vertical cylinder havin an area of cross section A=27 cm^(2) between two light movable pistons as shown in figure. Spring with force constant K=37-- N//m is in a relaxed state initially. Now the lower position is moved upwards a distance h//2 , h being the initial length of gas column . It is observed that the upper piston moves up by a distance h//16 . Final temperature of gas 4//3 xx 273 K . Take gamma for the gas to be 3//2 . When the lower pistone is moved upwards a distance h//2 , the compression.

4.375 g of a substance when dissolved in 36.0 g of water, lowered its vapour pressure by 0.5 mm at a given temperature. The vapour pressure of water at this temperature is 25.0 mm . Calculate the molecular weight of solute.