1
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A diatomic gas undergoes adiabatic change. Its pressure P and temperature T are related as $\mathrm{P} \propto \mathrm{T}^{\mathrm{x}}$ where the value of x is

A
3.5
B
2.5
C
4.5
D
3
2
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A monoatomic gas is heated at constant pressure. The percentage of total heat used for doing external work is

A
30%
B
40%
C
50%
D
60%
3
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two rods, one of copper ( Cu$)$ and the other of iron ( Fe ) having initial lengths $\mathrm{L}_1$ and $\mathrm{L}_2$ respectively are connected together to form a single rod of length $L_1+L_2$. The coefficient of linear expansion of Cu and Fe are $\alpha_c$ and $\alpha_i$ respectively. If the length of each rod increases by the same amount when their temperatures are raised by $t^{\circ} \mathrm{C}$, then ratio of $\frac{L_1-L_2}{L_1+L_2}$ will be

A
$\frac{\alpha_i}{\alpha_c+\alpha_i}$
B
$\frac{\alpha_c}{\alpha_c+\alpha_i}$
C
$\frac{\alpha_i-\alpha_c}{\alpha_c+\alpha_i}$
D
$\frac{\alpha_c-\alpha_i}{\alpha_c+\alpha_i}$
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The specific heat of argon at constant pressure and constant volume are $C_p$ and $C_v$ respectively. It's density ' $\rho$ ' at N.T.P. will be $[\mathrm{P}$ and T are pressure and temperature respectively at N.T.P.]

A
$\frac{P}{T\left(C_p-C_v\right)}$
B
$\frac{\mathrm{PT}}{\left(\mathrm{C}_{\mathrm{p}}-\mathrm{C}_{\mathrm{v}}\right)}$
C
$\frac{T\left(C_p-C_v\right)}{P}$
D
$\frac{\left(\mathrm{C}_{\mathrm{p}}-\mathrm{C}_{\mathrm{v}}\right)}{\mathrm{PT}}$
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