In two identical communicating vessel we poured water (see picture). In one of them we put an ice ball of volume `V=100 cm^(3)` which gets exactly half immersed in the water. The density of water `rho_(w)=1000kg//m^(3)` the density of ice `rho_(i)=900kg//m^(3)`
Which of the following actions will raise the water level.

Options

A. Heating the system
B. Putting a coin on top of ice ball.
C. Putting a coin in right vessel
D. Accelerating the system upwards.

Answer

A, C

Explanation

(A) Heating will melt the ice and increase the volume of water. (C) coin placed in right vessel will displace some volume of water, which will be equally distributed to both vessels raising level in both.