An engine has an efficiency of 1/3. the amount of work this engine can perform per kilocalorie of heat input is

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Important Questions on Heat Engine

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Indian Army Agniveer

IMPORTANT

Achieve Indian Army Agniveer Physics Practice Book>Chapter 14 - Heat Engine>Exercise 1>Q 1

The first law of thermodynamics is a statement of

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Indian Army Agniveer

IMPORTANT

Achieve Indian Army Agniveer Physics Practice Book>Chapter 14 - Heat Engine>Exercise 1>Q 2

In a given process for an ideal gas,

d W = 0

and

d Q < 0

. Then, for the gas

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IMPORTANT

Achieve Indian Army Agniveer Physics Practice Book>Chapter 14 - Heat Engine>Exercise 1>Q 3

A hot cup of coffee is kept on the table. After some time it attains a thermal equilibrium with the surroundings. By considering the air molecules in the room as a thermodynamic system, which of the given is true ?

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Indian Army Agniveer

IMPORTANT

Achieve Indian Army Agniveer Physics Practice Book>Chapter 14 - Heat Engine>Exercise 1>Q 4

Assertion: First law of thermodynamics can be applied only for an ideal or real gas system.

Reason: First law of thermodynamics is nothing but law of conservation of energy.

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Indian Army Agniveer

IMPORTANT

Achieve Indian Army Agniveer Physics Practice Book>Chapter 14 - Heat Engine>Exercise 1>Q 5

Match the following:

List-I		List-II
$(A)$	Zeroth law of Thermodynamics	$(I)$	Direction of flow of heat
$(B)$	First law of thermodynamics	$(II)$	Work done is zero
$(C)$	Free expansion of a gas	$(III)$	Thermal equilibrium
$(D)$	Second law of Thermodynamics	$(IV)$	Law of conservation of energy