Question

People living in houses which are far from municipal water tanks often find it difficult to get water on the top floor even if it is situated lower than the level of the water tank. This is because:

• A. There is a loss of pressure when water is flowing.
• B. There is generally some fault with the pipes otherwise water must reach up to the level of tank.
• C. The pipes are not of uniform diameter.
• D. People living in the house near the tank consume all the water in the tank.

Answer 1

The correct option is A

There is a loss of pressure when water is flowing.

According to Bernoulli's Principle, the pressure of fluids decreases with the increase in velocity. That is, there is a loss of pressure when water is flowing with increased speed(velocity). So, for the people who are living in houses which are far away from municipal water tanks, the speed of water will be more and thus the pressure is clearly less. So, they often find it difficult to get water on the top floor as the pressure of water is less to reach the top floor even if it is situated lower than the level of the water tank.