Mechanical Prop...

A block of aluminium of mass 1 kg and volume 3.6 × 10^-4 m³ is suspended from a string and then completely immersed in a container of water. The decrease in tension in the string after immersion is

If pressure at half the depth of a lake is equal to 2/3 pressure at the bottom of the lake, then what is the depth of the lake?

The height of a mercury barometer is 75 cm at sea level and 50 cm at the top of a hill.

The pressure at the bottom of a tank containing a liquid does not depend on

The volume of an air bubble becomes three times as it rises from the bottom of a lake to its surface. Assuming atmospheric pressure to be 75 cm of Hg and the density of water to be 1/10 of the density of mercury, the depth of the lake is

Streamline flow is more likely for liquids with

A body weights 50g in air and 40 g in water. How much would it weigh in a liquid of specific gravity 1.5 ?

A barometer tube reads 76 cm of mercury. If the tube is gradually inclined at an angle of 60^o with vertical, keeping the open end immersed in the mercury reservoir, the length of the mercury column will be

A triangular lamina of area A and height h is immersed in a liquid of density ρ in a vertical plane with its base on the surface of the liquid. The thrust on the lamina is

An open U-tube contains mercury.When 11.2 cm of water is poured into one of the arms of the tube,how height does the mercury rise in the other arm form its initial level ?