1
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of work done by an ideal rigid diatomic gas to the heat supplied by the gas in an isobaric process is

A
$\frac{3}{7}$
B
$\frac{2}{7}$
C
$\frac{4}{7}$
D
$\frac{5}{7}$
2
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The internal energy of an ideal diatomic gas corresponding to volume ' $V$ ' and pressure ' P ' is 2.5 PV. The gas expands from 1 litre to 2 litre at a constant pressure of $10^5 \mathrm{~N} / \mathrm{m}^2$. The heat supplied to a gas is

A
350 J
B
300 J
C
250 J
D
200 J
3
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Four moles of hydrogen, two moles of helium and one mole of water vapour form an ideal gas mixture. $\left[C_{\mathrm{v}}\right.$ for hydrogen $=\frac{5}{2} R, C_v$ for helium $=\frac{3}{2} R, \quad C_{\mathrm{v}}$ for water vapour $\left.=3 \mathrm{R}\right]$ What is the molar specific heat at constant pressure of the mixture?

A
$\frac{11}{3} \mathrm{R}$
B
$\frac{23}{7} R$
C
$\frac{16}{7} R$
D
$\frac{23}{3} R$
4
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A sheet of steel is 40 cm long and 5 cm broad at $0^{\circ} \mathrm{C}$. The surface area of the sheet increases by $1.4 \mathrm{~cm}^2$ at $100^{\circ} \mathrm{C}$. Coefficient of linear expansion of steel is

A
$1.9 \times 10^{-5} /{ }^{\circ} \mathrm{C}$
B
$2.4 \times 10^{-5} /^{\circ} \mathrm{C}$
C
$3.5 \times 10^{-5} /^{\circ} \mathrm{C}$
D
$7 \times 10^{-5} / \mathrm{C}$
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