Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 2>Q 32

MEDIUM

JEE Main/Advance

IMPORTANT

Earn 100

Oxygen, nitrogen and helium gas are kept in three identical adiabatic containers $P, Q$ and $R$ , respectively at equal pressure. When the gases are pushed to half their original volumes. (initial temperature is same)

16.67% studentsanswered this correctly

Important Questions on Thermodynamics

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 2>Q 33

Which of the following statement/s in case of a thermodynamic process is /are correct ?

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 2>Q 34

If a system is made to undergo a change from an initial state to a final state by adiabatic process only, then

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 3>Q 1

An ideal gas undergoes a quasi-static reversible process in which its molar heat capacity

C

remains constant. If during this process, the relation of pressure

p

and volume

V

is given by

p V^{n} =

constant, then

n

is given by (here

C_{p}

and

C_{V}

are molar specific heat at constant pressure and constant volume, respectively.)

HARD

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 3>Q 2

The specific heat capacity of a metal at low temperature

(T)

is given as

C_{p} (kJ K^{- 1} {kg}^{- 1}) = 32 {(\frac{T}{400})}^{3}

. A

100 g

vessel of this metal is to be cooled from

20 K

to

4 K

by a special refrigerator operating at room temperature

(27 ° C)

. The amount of work required to cool the vessel is

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 3>Q 4

Find the coefficient of volume expansion of the gas, when an ideal gas is expanding such that

P T^{2} =

constant.

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 3>Q 6

C_{v}

and

C_{p}

denote the molar specific heat capacities of a gas at constant volume and constant pressure, respectively. Then

HARD

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 3>Q 7

The figure shows the $P - V$ plot of an ideal gas taken through a cycle $ABCDA$ . The part $ABC$ is a semi-circle and $CDA$ is half of an ellipse. Then,

Question Image

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Physics>Chapter 17 - Thermodynamics>Exercise - 3>Q 8

One mole of an ideal gas in initial state A undergoes a cyclic process $ABCA$ , as shown in the figure. Its pressure at $A$ is $P_{0}$ . Choose the correct option(s) from the following :

Question Image