ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 30

EASY

11th ICSE

IMPORTANT

Earn 100

The average kinetic energy of a hydrogen molecules at $27 ° C$ is $9.3 \times 10^{- 21} J$ . The mass of hydrogen molecule is $3.1 \times 10^{- 27} kg$ . Determine the root-mean- square speed of hydrogen molecule at $27 ° C$ .

Important Questions on Kinetic Theory of Gases

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 31

At what temperature will the average value of the kinetic energy of the molecule of a gas be

\frac{1}{3}

of the average value of kinetic energy at

27 ° C

?

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 32

If the temperature of air is increased from

27 ° C

to

227 ° C

, in what ratio will the average kinetic energies of its molecules be increased?

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 33

The temperature of a gas is

- 68 ° C

. To what temperature should it be heated so that the average kinetic energy of the molecules be doubled.

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 33

The temperature of a gas is

- 68 ° C

. To what temperature should it be heated so that the root-mean-square velocity of the molecules be doubled?

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 34

Up to what temperature should the hydrogen gas initially at

327 ° C

be cooled so that the root-mean- square velocity of its molecules becomes half of its initial value? The pressure remains constant.

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 35

There are

6 \times 10^{21}

hydrogen molecules in a vessel of volume

200 c m^{3}

. Its temperature is

27 ° C

and the pressure is

10^{5} N m^{- 2}

. If the temperature be raised to

47 ° C

, then in what ratio the following quantities would change, number of molecules per unit volume.

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 35

There are

6 \times 10^{21}

hydrogen molecules in a vessel of volume

200 {cm}^{3}

. Its temperature is

27 ° C

and the pressure is

10^{5} {Nm}^{- 2}

. If the temperature be raised to

47 ° C

, then in what ratio the following quantities would change, pressure of the gas in the vessel.

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 20 - Kinetic Theory of Gases>NUMERICALS>Q 35

There are

6 \times 10^{21}

hydrogen molecules in a vessel of volume

200 c m^{3}

. Its temperature is

27 ° C

and the pressure is

10^{5} N m^{- 2}

. If the temperature be raised to

47 ° C

, then in what ratio the following quantities would change, average kinetic energy of hydrogen?