Thermodynamics-Laws of Thermodynamics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 19 - 24 of 30

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Question number: 19

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

A system is given 300 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (j = 4.18 Joule/cal)

Choices

Choice (4) Response

a.

156.5 Joule

b.

- 528.2 Joule

c.

654 Joule

d.

-300 Joule

Question number: 20

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

110 J of heat is added to a gaseous system, whose internal energy change is 40 J, then the amount of external work done is

Choices

Choice (4) Response

a.

70 J

b.

40 J

c.

150 J

d.

110 J

Question number: 21

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

The first law of thermodynamics is concerned with the conservation of

Choices

Choice (4) Response

a.

Mass

b.

Energy

c.

Temperature

d.

Momentum

Question number: 22

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

Assertion-Reason▾

Assertion (Ꭺ)

A room can be warmed by opening the door of a refrigerator in a closed room

Reason (Ꭱ)

Head flows from lower temperature (refrigerator) to higher temperature (room).

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Both Ꭺ and Ꭱ are false

Question number: 23

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

In changing the state of thermodynamics from A to B state, dg heat required is Q and the work done by the system is W. Tae change in its internal energy is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Passage

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

V-T graph of a process of monoatomic ideal gas is as shown in figure.

Graph of volume vs pressure square depicts ABCD

Graph of Volume vs Pressure Square Depicts ABCD

In above figure expansion of monoatomic molecule is shown.

Question number: 24 (1 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

Sum of work done by the gas in process ABCD is –

Choices

Choice (4) Response

a.

negative

b.

data is insufficient

c.

zero

d.

positive

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