1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
For an ideal gas with initial pressure and volume pi and Vi respectively, a reversible isothermal expansion happens, when its volume becomes V0. Then, it is compressed to its original volume Vi by a reversible adiabatic process. If the final pressure is pf, then which of the following statement(s) is/are true?
A
pf = pi
B
pf > pi
C
pf < pi
D
$${{{p_f}} \over {{V_0}}}\, = \,{{{p_i}} \over {{V_i}}}$$
2
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Temperature of an ideal gas, initially at 27$$^\circ$$C, is raised by 6$$^\circ$$C. The rms velocity of the gas molecules will
A
increase by nearly 2%
B
decrease by nearly 2%
C
increase by nearly 1%
D
decrease by nearly 1%
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
2 moles of an ideal monoatomic gas is carried from a state (p0, V0) to state (2p0, 2V0) along a straight line path in a p-V diagram. The amount of heat absorbed by the gas in the process is given by
A
3 p0V0
B
$${9 \over 2}$$ p0V0
C
6 p0V0
D
$${3 \over 2}$$ p0V0
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