Question

Two thin evacuated (one end closed) glass take A and B are carefully immersed in a beaker containing mercury such a way that there is no chance to get air in to the tubes. A is stand vertically and B is making an angle θ with the vertical.

1. Is any rise of mercury in the tubes?

2. Is any height difference of mercury levels in tube A and B? Justify your answer.

3. When the doctors are measuring body pressure, it is advisable to lie on a table. Why?

Answer 1

1. Yes

2. No. Pressure is same at same level. To get same pressure, height of mercury becomes same.

3. When we lie on the table, the pressure of our body will be same at all points.