A gas is filled in the cylinder shown in the figure. The two pistons are joined by a string. If the gas is heated, the pistons will
A
Move towards left
B
Move towards right
C
Remain stationary
D
None of these
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B
Move towards right
b When the gas is heated, its temperature increases and thus it expands. As the cross-sectional area of right piston is more, therefore greater force will work on it (as Force $=$ Pressure $x$ Area). So piston will move towards right.
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