Thermodynamics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 76 - 80 of 86

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Question number: 76

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

For free expansion of the gas which of the following is true

Choices

Choice (4) Response

a.

b.

c.

d.

Q = W = 0 a n d ∆ E i n t = 0

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Question number: 77

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

In a given process for an ideal gas, ∆ W = 0 and ∆ Q < 0. Then for the gas

Choices

Choice (4) Response

a.

The temperature will increase

b.

The pressure will remain constant

c.

The temperature will decrease

d.

The volume will increase

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Question number: 78

» Thermodynamics » Concept of Temperature

MCQ▾

Question

An ideal gas is taken from point A to the point B, as shown in the P-V diagram, keeping the temperature constant. The work done in the process is

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 79

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

Which of the following processes are irreversible?

(1) Transfer of heat by radiation

(2) Electrical heating of a Ni chrome wire

(3) Transfer of heat by conduction

(4) Isothermal compression

Select the correct answers and mark it according to the following is:

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

1 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

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Question number: 80

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

Assertion-Reason▾

Assertion (Ꭺ)

In isothermal process whole heat energy supplied to the body is converted into inter energy.

Reason (Ꭱ)

According to the first law of thermodynamics,

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

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