Question

A simple U tube contains mercury to the

same level in both of its arms. If water is

poured to a height of 20 m in one arm, how

much will be the rise in mercury level in the

other arm?​

Answer 1

Answer:

0.74 m

Explanation:

Assume mercury level rose by x in the other other so the level must have depleted in the first arm by x

At the level of water mercury arm, use the fact that at same height pressure in liquid is equal.

hence the equation,

2*PHg*g*2x=Pwater*20*g

x=0.74m