In the relation $n=\frac{PV}{RT}$, where $n=$

Important Questions on Heat and Kinetic Theory of Gases

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 12

Mean free path of a gas molecule is

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 13

The $\mathrm{RMS}$ speed of gas molecule is given by

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 14

A diatomic molecule has how many degrees of freedom

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 15

For an ideal gas of diatomic molecules

MEDIUM

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 16

If the pressure and volume of certain quantity of ideal gas are halved, then its temperature

MEDIUM

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 18

From what height a block of ice must fall into a well, so that ${\left(\frac{1}{100}\right)}^{\mathrm{th}}$ of its mass may be melted? The temperature of the water in the well is $0 °\mathrm{C}$. Latent heat of fusion of ice $80 \mathrm{cal} {\mathrm{g}}^{-1}$ and $J=4.2\times {10}^7 \mathrm{erg} {\mathrm{cal}}^{-1}$.

MEDIUM

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 20

Which one of the following is the amount of that given up when $20 \mathrm{g}$ of steam at $100 °\mathrm{C}$ is condensed and cooled to $20 °\mathrm{C}$?

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 6 - Heat and Kinetic Theory of Gases>Practice Exercise>Q 21

$1 \mathrm{g}$ of water at $100 °\mathrm{C}$ is converted to steam at the same temperature. The amount of heat required is nearest to a value of