Question

A cylindrical vessel containing a liquid is closed by a smooth piston of mass m. If A is the cross-
sectional area of the piston and P. is the atmospheric pressure, then the pressure of the liquid just
below the piston is
mg
(a) P.
(b) P. +
(c)
(d) Data is not sufficient
A
Option (a)
Option (b)
Option (c)
Option (d)​

Answer 1

Answer:

1. option b

2. option I don't now because there is nothing written there