# Thermodynamics-Laws of Thermodynamics (NEET (NTA-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.

b.

c.

d.

## Passage

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

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

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

### Question

Heat is supplied to the gas in process (s) -

### Choices

Choice (4) Response

a.

DA, AB and DC

b.

AB and BC only

c.

DA only

d.

DA and AB only

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