Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 9

EASY

JEE Main

IMPORTANT

Earn 100

A bubble of $n$ mole of helium is submerged at a certain depth in water. The temperature of water increases by $Δ t ° C$ . How much heat is added approximately to helium during expansion?

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Important Questions on Thermodynamics

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 10

An ideal gas is heated at constant pressure and in this process, it absorbs

Q

amount of heat. If the adiabatic exponent is

γ

, then the fraction of heat absorbed in performing the work is

EASY

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 11

The molar specific heat of the process

V \propto T^{4}

, for

C H_{4}

gas, at room temperature, is

EASY

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 12

The molar heat capacity of a monoatomic ideal gas undergoing the process

P V^{1 / 2} = constant

is

EASY

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 13

The first law of thermodynamics is a special case of,

EASY

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 14

An ideal gas undergoes the cyclic process

abca

as shown in the figure. The internal energy change of the gas along the path

c a

is

- 180 J

. The gas absorb

250 J

of heat along the path

a b

and also absorbs

60 J

of heat along the path

bc

. Find the work done by the gas along the path

a b c

Question Image

EASY

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 15

A given quantity of gas is taken from the state $A$ to the state $C$ reversibly by two paths, $A \to C$ directly and $A \to B \to C$ as shown in the figure below:

Question Image

During the process $A \to C$ , work done by the gas is $100 J$ and heat absorbed is $120 J$ . If during the process $A \to B \to C$ , the work done by the gas is $80 J$ , the heat absorbed is

MEDIUM

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 18

A monoatomic gas of mass

4.0 u

is kept in an insulated container. Container is moving with velocity

30 m / s .

If container is suddenly stopped then change in temperature of the gas (R=gas constant) is

\frac{x}{3 R} \cdot

Value of

x

is

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IMPORTANT

Physics Crash Course JEE Main>Chapter 10 - Thermodynamics>Level 1>Q 19

32 g

of

O_{2}

is contained in a cubical container of side

1 m

and maintained at a temperature of

127 ° C

. The isothermal bulk modulus of elasticity of the gas in terms of universal gas constant

R

is

a R

. Find the value of

a

.