# Thermodynamics-Concept of Temperature (NEET Physics): Questions 15 - 19 of 36

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 15

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

Helium at 27° has a volume of 27 litres. It is suddenly compressed to a volume of 1 litre. The temperature of the gas will be

### Choices

Choice (4) Response

a.

9327°C

b.

2700°C

c.

1200°C

d.

108°C

## Question number: 16

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

The efficiency of Carnot’s engine operating between reservoirs, maintained at temperatures 27 C and -123 C,

### Choices

Choice (4) Response

a.

0.4%

b.

0.75%

c.

50%

d.

24%

## Question number: 17

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

Eight moles of an ideal gas performs a cycle shown in figure. If the temperature T A = 1200 K, T B = 1600 K, T c = 4400 K and T D = 2400 K, the work done per

### Choices

Choice (4) Response

a.

120 kJ

b.

160 KJ

c.

106 kJ

d.

139 kJ

## Question number: 18

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

A Carnot engine whose low temperature reservoir is at 7 C has an efficiency of 50%. It is desired to increase the efficiency to 70%. By how many degrees should the temperature of the high temperature reservoir be increased?

### Choices

Choice (4) Response

a.

380K

b.

280 K

c.

840K

d.

560 K

## Question number: 19

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

A scientist says that the efficiency of his heat engine which operates at source temperature 120°C and sink temperature 27°C is 26%, then

### Choices

Choice (4) Response

a.

It is possible but less probable

b.

It is quite probable

c.

It is impossible

d.

Data are incomplete

f Page