1
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Heat energy of $735 \mathrm{~J}$ is given to a diatomic gas allowing the gas to expand at constant pressure. Each gas molecule rotates around an internal axis but do not oscillate. The increase in the internal energy of the gas will be :
A
$572 \mathrm{~J}$
B
$441 \mathrm{~J}$
C
$525 \mathrm{~J}$
D
$735 \mathrm{~J}$
2
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A hypothetical gas expands adiabatically such that its volume changes from 08 litres to 27 litres. If the ratio of final pressure of the gas to initial pressure of the gas is $\frac{16}{81}$. Then the ratio of $\frac{\mathrm{Cp}}{\mathrm{Cv}}$ will be.
A
$\frac{3}{1}$
B
$\frac{4}{3}$
C
$\frac{1}{2}$
D
$\frac{3}{2}$
3
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The pressure of a gas changes linearly with volume from $$\mathrm{A}$$ to $$\mathrm{B}$$ as shown in figure. If no heat is supplied to or extracted from the gas then change in the internal energy of the gas will be

JEE Main 2023 (Online) 31st January Morning Shift Physics - Heat and Thermodynamics Question 68 English

A
6 J
B
4.5 J
C
zero
D
$$-$$4.5 J
4
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct relation between $$\gamma = {{{c_p}} \over {{c_v}}}$$ and temperature T is :

A
$$\gamma \propto T$$
B
$$\gamma \propto {1 \over {\sqrt T }}$$
C
$$\gamma \propto {1 \over T}$$
D
$$\gamma \propto T^\circ $$
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