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1
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
When 80 J of heat is absorbed by a monoatomic gas, its volume increases by $16 \times 10^{-5} \mathrm{~m}^3$. The pressure of the gas is
A
$2 \times 10^5 \mathrm{Nm}^{-2}$
B
$4 \times 10^5 \mathrm{Nm}^{-2}$
C
$6 \times 10^5 \mathrm{Nm}^{-2}$
D
$5 \times 10^5 \mathrm{Nm}^{-2}$
2
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The efficiency of a Carnot heat engine is $25 \%$ and the temperature of its source is $127^{\circ} \mathrm{C}$. Without changing the temperature of the source, if absolute temperature of the sink is decreased by $10 \%$, the efficiency of the engine is
A
$27.5 \%$
B
$17.5 \%$
C
$32.5 \%$
D
$22.5 \%$
3
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The total internal energy of 2 moles of a monoatomic gas at a temperature $27^{\circ} \mathrm{C}$ is $U$. The total internal energy of 3 moles of a diatomic gas at a temperature $127^{\circ} \mathrm{C}$ is

A
$U$
B
$\frac{10 U}{3}$
C
2 U
D
$\frac{2 U}{3}$
4
AP EAPCET 2024 - 22th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A metal ball of mass 100 g at $20^{\circ} \mathrm{C}$ is dropped in 200 g of water at $80^{\circ} \mathrm{C}$. If the resultant temperature is $70^{\circ} \mathrm{C}$, then the ratio of specific heat of the metal to that of water is

A
$\frac{5}{2}$
B
$\frac{1}{2}$
C
$\frac{2}{5}$
D
$\frac{2}{1}$
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