52 mm

104 mm

200 mm

140 mm

the space that is emptied below the level of mercury column in the tube

the space that is emptied above the level of mercury column in the tube

the space that is full above the level of mercury column in the tube

the space that is full below the level of mercury column in the tube

42.39 m/sec

4.239 m/sec

42.39 m/min

4.239 m/min

stable equilibrium

unstable equilibrium

neutral equilibrium

None of the above

half

equal

twice

thrice