Thermodynamics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 22 - 25 of 86

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Question number: 22

» Thermodynamics » Concept of Temperature

MCQ▾

Question

An ideal gas expands isothermally from a volume V 1 to V 2 and then compressed to original volume V 1 adiabatically. Initial pressure is P 1 and final pressure is P 3. The total work done is W. Then

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 23

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

One mole of an ideal gas expands at a constant temperature of 300 K from an initial volume of 10 litres to a final volume of 20 litres. The work done in expanding the gas is

(R = 8.31J/mole-K)

Choices

Choice (4) Response

a.

3456 Joules

b.

1500 Joules

c.

1728 Joules

d.

750 Joules

Question number: 24

» Thermodynamics » Concept of Temperature

Assertion-Reason▾

Question

Assertion (Ꭺ)

The specific heat of a gas in an adiabatic process is zero and in an isothermal process is infinite.

Reason (Ꭱ)

Specific heat of a gas is directly proportional to change of heat in system and inversely proportional change in temperature.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 25

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

When heat is given to a gas in an isothermal change, the result will be

Choices

Choice (4) Response

a.

External work done

b.

Increase in internal energy

c.

External work done and aso rise in temp.

d.

Rise in temperature

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