Tag: pressure

Questions Related to pressure

A deep sea diver may hurt his ear drum during diving because of:

physics pressure pressure in fluids pressure in liquids introduction to pressure

  1. lack of oxygen

  2. more atm pressure

  3. more water pressure

  4. all of the above

Show answer
Correct Option: C
Explanation:

The pressure at a depth $h$ below the surface of water is given by 

$P=P _0+h\rho g$
Hence as the depth increases, the pressure increases.
Due to this increased pressure, as the diver goes deeper in sea water, the ear drum may get damaged.

In cities water supply from an overhead tank to.the houses is done due to:

physics pressure pressure in fluids pressure in liquids introduction to pressure

  1. difference in pressure

  2. gravitational force

  3. decrease of friction in pipes

  4. flow of liquid

Show answer
Correct Option: B
Explanation:

The water in an overhead tank has higher gravitational potential to compared to water which finally flows out of the taps in the houses. 
The water moves due to this decrease in gravitational potential energy of water by flowing out of taps, or, the water is supplied by the gravitational force acting on water.