# Thermodynamics (NEET Physics): Questions 80 - 83 of 86

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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

## Question number: 81

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

Six moles of an ideal gas performs a cycle shown in figure. If the temperature T A = 600K, T B = 800 K, T C = 2200K and T D = 1200. K, the work done per

### Choices

Choice (4) Response

a.

60 KJ

b.

40 kJ

c.

20 kJ

d.

30 kJ

## Question number: 82

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

A Carnot engine whose low temperature reservoir is at 17 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.

280 K

b.

560 K

c.

840K

d.

380K

## Question number: 83

» Thermodynamics » Concept of Temperature

Appeared in Year: 2016

MCQ▾

### Question

The temperature inside a refrigerator is and the room temperature is . The amount of heat deliver to the room for each joule of electrical energy consumed ideally will be –

### Choices

Choice (4) Response

a.

b.

c.

d.

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