Thermodynamics (NEET (National Eligibility cum Medical Entrance Test) 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, Equation

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

System of ideal gas Temperature at A, B, C and D

System of Ideal Gas Temperature at a, B, C and D

In above figure we show six moles of an ideal gas performs a cycle.

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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