Kinetic Theory of Gases (NEET Physics): Questions 16 - 19 of 39

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Question number: 16

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

If pressure of a gas contained in a closed vessel is increased 0.4 % when heated by 1°C, the initial temperature must be

Choices

Choice (4) Response

a.

250°C

b.

2500 K

c.

25°C

d.

250 K

Question number: 17

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Let V¯,VrmsandVp respectively denote the mean speed, root mean square speed and most probable speed of the molecules in an ideal monoatomic gas at absolute temperature T, the mass of a molecule is m. Then

(1) VP<V¯<Vrms

(2) The average kinetic energy of a molecule is 34mVP2 .

(3) No molecule can have speed greater than 2Vrms

(4) No molecule can have speed less than VP2

select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Question number: 18

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

A flask is filled with 15 gm of an ideal gas at 27°C and its temperature is raised to 47°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is

Choices

Choice (4) Response

a.

1.5 g

b.

2.5 g

c.

1.0 g

d.

2.0 g

Passage

Read the passage given below and answer the questions that follows:

A diathermic piston divides adiabatic cylinder of volume V 0 into two equal parts as shown in the figure. Both parts contain ideal monoatomic gases. The initial pressure and temperature of gas in left compartment are P 0 and T 0 while that in right compartment are 2P 0 and 2T 0. Initially the piston is kept fixed and the system is allowed to acquire a state of thermal equilibrium.

Diathermic piston divides into adiabatic cylinder.

Diathermic Piston Divides Into Adiabatic Cylinder.

In above figure we show that a diathermic piston divides adiabatic cylinder of volume V0 into two equal parts

Question number: 19 (1 of 2 Based on Passage) Show Passage

» Kinetic Theory of Gases » Kinetic Theory of Gases

MCQ▾

Question

The heat that flown from right compartment to left compartment before thermal equilibrium is achieved is

Choices

Choice (4) Response

a.

P0V0

b.

38P0V0

c.

34P0V0

d.

None of the above

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