1
WB JEE 2021
MCQ (More than One Correct Answer)
+2
-0
Change Language
WB JEE 2021 Physics - Heat and Thermodynamics Question 18 English
Consider the p - V diagram for 1 mole of an ideal monatomic gas shown in the figure. Which of the following statements is/are true?
A
The change in internal energy for the whole process is zero.
B
Heat is rejected during the process.
C
Change in internal energy for process A $$\to$$ B is $$ - {3 \over 2}$$p0V0.
D
Work done by the gas during the entire process is 2p0V0.
2
WB JEE 2019
MCQ (More than One Correct Answer)
+2
-0
Change Language
The initial pressure and volume of a given mass of an ideal gas with $$\left( {{{{C_p}} \over {{C_V}}} = \gamma } \right)$$, taken in a cylinder fitted with a piston, are p0 and V0 respectively. At this stage the gas has the same temperature as that of the surrounding medium which is T0. It is adiabatically compressed to a volume equal to $${{{V_0}} \over 2}$$. Subsequently the gas is allowed to come to thermal equilibrium with the surroundings. What is the heat released to the surrounding?
A
0
B
$$({2^{\gamma - 1}} - 1){{{p_0}V} \over {\gamma - 1}}$$
C
$$\gamma {p_0}{V_0}In2$$
D
$${{{p_0}V} \over {2(\gamma - 1)}}$$
3
WB JEE 2018
MCQ (More than One Correct Answer)
+2
-0
Change Language
Which of the following statement(s) is/are true?

"Internal energy of an ideal gas .............."
A
decreases in an isothermal process.
B
remains constant in an isothermal process.
C
increases in an isobaric process.
D
decreases in an isobaric expansion.
4
WB JEE 2017
MCQ (More than One Correct Answer)
+2
-0
Change Language
If the pressure, temperature and density of an ideal gas are denoted by p, T and $$\rho $$, respectively, the velocity of sound in the gas is
A
proportional to $$\sqrt \rho $$, when T is constant
B
proportional to $$\sqrt T $$
C
proportional to $$\sqrt p $$, when $$\rho $$ is constant
D
proportional to T.
WB JEE Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12