1
JEE Main 2023 (Online) 25th January Evening Shift
+4
-1

Match List I with List II

List I List II
A. Isothermal Process I. Work done by the gas decreases internal energy
B. Adiabatic Process II. No change in internal energy
C. Isochoric Process III. The heat absorbed goes partly to increase internal energy and partly to do work
D. Isobaric Process IV. No work is done on or by the gas

Choose the correct answer from the options given below :

A
A-I, B-II, C-IV, D-III
B
A-II, B-I, C-III, D-IV
C
A-II, B-I, C-IV, D-III
D
A-I, B-II, C-III, D-IV
2
JEE Main 2023 (Online) 25th January Evening Shift
+4
-1

The graph between two temperature scales P and Q is shown in the figure. Between upper fixed point and lower fixed point there are 150 equal divisions of scale P and 100 divisions on scale Q. The relationship for conversion between the two scales is given by :-

A
$${{{t_P}} \over {100}} = {{{t_Q} - 180} \over {150}}$$
B
$${{{t_P}} \over {180}} - {{{t_Q} - 40} \over {100}}$$
C
$${{{t_Q}} \over {150}} = {{{t_P} - 180} \over {100}}$$
D
$${{{t_Q}} \over {100}} = {{{t_P} - 30} \over {150}}$$
3
JEE Main 2023 (Online) 25th January Evening Shift
+4
-1

According to law of equipartition of energy the molar specific heat of a diatomic gas at constant volume where the molecule has one additional vibrational mode is :-

A
$$\frac{9}{2}R$$
B
$$\frac{5}{2}R$$
C
$$\frac{3}{2}R$$
D
$$\frac{7}{2}R$$
4
JEE Main 2023 (Online) 25th January Morning Shift
+4
-1

The root mean square velocity of molecules of gas is

A
Proportional to temperature ($$T$$)
B
Inversely proportional to square root of temperature $$\left( {\sqrt {{1 \over T}} } \right)$$
C
Proportional to square of temperature ($$T^2$$)
D
Proportional to square root of temperature ($$\sqrt T$$)
JEE Main Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination