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The pressure exerted by a gas is $P_{0}$ . If the mass of molecules becomes half and their velocities becomes double, then the pressure will become:

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Important Questions on Kinetic Theory

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MHT-CET

IMPORTANT

Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 33

The speeds of

5

molecules of a gas (in arbitrary units) are

2, 3, 4, 5, 6 .

The root mean square speed for these molecules is

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Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 34

The RMS speed of an ideal diatomic gas, at temperature

T

, is

v .

When the gas dissociates into atoms, it's new RMS speed becomes double. The temperature at which the gas dissociated into atoms was

EASY

MHT-CET

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Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 35

N_{2}

molecule is

14

times heavier than a

H_{2}

molecule. At what temperature will the RMS speed of

H_{2}

molecule be equal to that of

N_{2}

molecules at

27 ° C

EASY

MHT-CET

IMPORTANT

Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 36

The temperature of hydrogen at which the average speed of its molecules is equal to that of oxygen molecules at a temperature of

31 ° C

is:

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MHT-CET

IMPORTANT

Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 37

If RMS velocity of a gas is

v_{r m s}

= 1840 m s^{- 1}

and its density

ρ = 8 .99 \times 10^{- 2} kg m^{3}

, then the pressure of the gas will be

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MHT-CET

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Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 38

If the RMS velocity of hydrogen becomes equal to the escape velocity from the Earth's surface, then the temperature of hydrogen gas would be

EASY

MHT-CET

IMPORTANT

Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 39

At temperature

T

N

molecules of gas

A

each having mass

m

and at the same temperature

2 N

molecules of gas

B

each having mass

2 m

are filled in a container. The mean square velocity of molecules of a gas

B

v^{2}

and

x

component of mean square velocity of molecules of gas

A

w^{2}

. The ratio of

\frac{w^{2}}{v^{2}}

is,

EASY

MHT-CET

IMPORTANT

Practice Book for MHT-CET Physics (Waves and Thermodynamics)>Chapter 2 - Kinetic Theory>TOPICWISE QUESTIONS>Q 40

The RMS velocity of gas molecules of a given amount of a gas at

27 °C

and

1.0 \times 10^{5} N m^{- 2}

pressure is

200 m s^{- 1}

. If temperature and pressure are, respectively,

127 ° C

and

0.5 \times 10^{5} N m^{- 2}

, then the RMS velocity will be,

The pressure exerted by a gas is P0. If the mass of molecules becomes half and their velocities becomes double, then the pressure will become:

Important Questions on Kinetic Theory

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The pressure exerted by a gas is $P_{0}$ . If the mass of molecules becomes half and their velocities becomes double, then the pressure will become: