Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 2>Q 30

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A carnot engine is a device

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Important Questions on Thermodynamics

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 2>Q 31

If the work done on a carnot engine working as a refrigetor is $10 J$ , Calculate the amount of energy absorbed from the reservoir at lower temperature if same engine when used as a heat engine has efficiency $η = \frac{1}{10}$ .

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 2>Q 32

In a Carnot engine, when heat is taken by a perfect gas from the source, then the temperature of the source

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 2>Q 33

The source and sink temperatures of a Carnot engine are

400 K

and

300 K

, its efficiency is

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 2>Q 34

A cyclic process for

1

mole of an ideal gas is shown in the

V - T

diagram. The work done in

A B

,

B C

and

C A

, respectively are

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 2>Q 35

An ideal gas at

27 ° C

is compressed adiabatically to

\frac{8}{27}

of its original volume. If

γ = \frac{5}{3}

, then the rise in temperature is

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 3>Q 1

One mole of an ideal gas expands adiabatically such that its temperature

T \propto \frac{1}{\sqrt{V}}

The value of

γ = (\frac{C_{P}}{C_{V}})

of the gas is

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 3>Q 2

One mole of an ideal mono atomic gas at temperature

T_{0}

expands slowly according to the law

\frac{P}{V} = constant.

If the final temperature is

2 T_{0}

, heat supplied to the gas is

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Physics Crash Course NEET>Chapter 8 - Thermodynamics>Level 3>Q 3

A Carnot engine operates with a source at

500 K

and sinks at

375 K

. Engine consumes

600 kcal

of heat per cycle. The heat rejected to sink per cycle is