A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 8

HARD

11th West Bengal Board

IMPORTANT

Earn 100

Does a gas do any work when it expands adiabatically? If so, what is the source of energy needed to do this work?

Important Questions on Thermodynamics

EASY

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 9

When ice melts, the change in internal energy is greater than the heat supplied. Why?

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 10

One mole of a perfect gas in a cylinder fitted with a piston has a pressure, volume

V

and absolute temperature

T

. If the temperature is increased by

1 K

, keeping its pressure constant, show that (i) the increase in the volume of the gas is

\frac{V}{T}

.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 10

One mole of a perfect gas in a cylinder fitted with a piston has a pressure

P

, volume

V

and absolute temperature

T

. If the temperature is increased by

1 K

, keeping its pressure constant, show that mechanical work done by the gas is

\frac{P V}{T}

.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 11

A gas expands from a state

1

to another state

2

(higher pressure state) by two different processes (A) first by keeping the volume constant and then by keeping pressure constant and (B) first by keeping the pressure constant and then by keeping the volume constant. In which process will more heat be applied to the gas?

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 12

The water at the bottom of a water-fall is hotter than the water at the top. Why?

MEDIUM

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 19 - Thermodynamics>EXERCISE>Q 13

If a liquid is stirred violently, it becomes hot. Is it a reversible process ?

HARD

11th West Bengal Board