Question
Question: Consider the barometer shown in figure. Density of mercury is r. A small hole is made at point S as ...
Consider the barometer shown in figure. Density of mercury is r. A small hole is made at point S as shown. The mercury comes out from this hole with speed v equal to –
A
2gh
B
2gH
C
2g(H–h)
D
None of thes
Answer
None of thes
Explanation
Solution
The mercury will not come out from this hole as the pressure
outside the tube (= atmospheric pressure) is greater than the pressure inside the tube (= rgh).
Here, r is the density of mercury.