HARD

JEE Advanced

IMPORTANT

Earn 100

For a certain gas, the heat capacity at constant pressure is greater than that at constant volume by $29.1 J K^{- 1}$ .
(a) How many moles of the gas are there?
(b) If the gas is monatomic, what are heat capacities at constant volume and pressure?
(c) If the gas molecules are diatomic which rotate but do not vibrate, what are heat capacities at constant volume and at constant pressure?

Important Questions on Thermometry, Thermal Expansion and Kinetic Theory of Gases

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 46

The heat capacity at constant volume of a sample of a monatomic gas is

35 J K^{- 1}

. Find
(a) the number of moles
(b) the internal energy at

0 ° C

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 47

Two thermally insulated vessels

1

and

2

are filled with air at temperatures

(T_{1}, T_{2}),

volumes

(V_{1}, V_{2})

and pressures

(P_{1}, P_{2})

, respectively. If the valve joining the two vessels is opened, the temperature inside the vessel at equilibrium will be (

P =

common pressure)

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 48

Two marks on a glass rod

10 cm

apart are found to increase their distance by

0.08 mm

when the rod is heated from

0 ° C

100 ° C

. A flask made of the same glass as that of rod, measures a volume of

100 cc

0 ° C

. The volume it measures at

100 ° C

cc

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 1

The given curve represents the variation of temperature as a function of volume for one mole of an ideal gas. Which of the following curves best represents the variation of pressure as a function of volume?

Question Image

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 2

A gas is found to be obeyed the law

p^{2} V =

constant. The initial temperature and volume are

T_{0}

and

V_{0}

. If the gas expands to a volume

3 V_{0}

, then the final temperature becomes

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 3

Air fills a room in winter at

7 ° C

and in summer at

37 ° C

. If the pressure is the same in winter and summer, the ratio of the weight of the air filled in winter and that in summer is

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 4

Three closed vessels

A, B

and

C

are at the same temperature

T

and contain gases which obey Maxwell distribution law of velocities. Vessel

A

contains

O_{2}, B

only

N_{2}

and

C

a mixture of equal quantities of

O_{2}

and

N_{2}

. If the average speed of the

O_{2}

molecules in the vessel

A

v_{1}

that of

N_{2}

molecules in vessel

B

v_{2}

, then the average speed of the

O_{2}

molecules in vessel

C

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 5

In a very good vacuum system in the laboratory, the vacuum attained was

10^{- 13} atm

. If the temperature of the system was

300 K

, the number of molecules present in a volume of

1 {cm}^{3}

Important Questions on Thermometry, Thermal Expansion and Kinetic Theory of Gases

Learn and Prepare for any exam you want !