Question

Mercury is poured in a U-tube. Temperature of one side is ${50}^{\circ }C$ and level of mercury on this side is $h_1$.
Temperature of the other side is ${100}^{\circ }C$ and level of mercury on this side is $h_2$. Then:

• A. $h_1=h_2$
• B. $h_1>h_2$
  
• C. $h_2>h_1$
  
• D. $h_1=2h_2$

Answer 1

The correct option is B $h_1>h_2$


Density is higher at low temperature and density is lower at high temperature. Hence the level of mercury will more for ${50}^0$ than for ${100}^0$.