Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 8

HARD

11th Odisha Board

IMPORTANT

Earn 100

Calculate $C_{p} - C_{v}$ for one gram of helium gas. Given the molecular mass of helium is $4$ and $J = 4.186 \times 10^{7} erg / cal$ .

Important Questions on Molecular Properties of Matter

HARD

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 9

Calculate the value of the two specific heats with the aid of the following data. Density of hydrogen at NTP‌

0.09 gm / litre

, speed of sound in hydrogen at

0 ° C = 1262 m / s

.

HARD

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 10

The escape speed on earth is

1.12 \times 10^{4} m / s

. At what temperature would the r.m.s speed of (i) He atom (ii)

H_{2}

-molecules (iii)

N_{2}

molecule attains the escape speed.

HARD

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 1

Give the basic postulates of kinetic theory of gas, and derive an expression for pressure of a gas.

MEDIUM

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 2

Discuss the kinetic interpretation of temperature. Find expression for K.E. per

gm mole

of the gas and K.E. per

1 gm

of gas.

MEDIUM

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 3

Establish the relation

\frac{C_{P}}{C_{V}} = 1 + \frac{2}{f}

, where

' f'

is the degrees of freedom of the gas.

HARD

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 4

Write down the postulates of kinetic theory. Obtain the gas laws from the expression for pressure.

HARD

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 5

Discuss about degrees of freedom. State law of equipartition of energy. Hence deduce expression for K.E. of a gas molecule, of

1 gm

of gas and

1 gm mole

of gas.

MEDIUM

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 11>Chapter 19 - Molecular Properties of Matter>MODEI. QUESTIONS>Q 1

Two different gases at same temperature have equal kinetic energy.