A cylinder containing an ideal gas is in vertical position and has a piston of mass 
that is able to move up or down without friction (figure). If the temperature is increased:
A
Both 
and 
of the gas will change
and of the gas will change
B
Only 
will increase according to Charles' law
will increase according to Charles' law
C
will change but not 
D
will change but not 
Text Solution
Verified by ExpertsThe correct answer is:
C
Consider the diagram where an ideal gas is contained in a cylinder, having a piston of mass M. Friction is absent.
The pressure inside the gas will be
where, 
atmospheric pressure
area of cross-section of the piston.
weight of piston
Hence, 
constant.
as 
volume 
increases at constant pressure.
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