1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A slab consists of two identical plates of copper and brass. The free face of the brass is at $0^{\circ} \mathrm{C}$ and that of copper at $100^{\circ} \mathrm{C}$. If the thermal conductivities of brass and copper are in the ratio $1: 4$, then the temperature of interface is
A
$20^{\circ} \mathrm{C}$
B
$40^{\circ} \mathrm{C}$
C
$60^{\circ} \mathrm{C}$
D
$80^{\circ} \mathrm{C}$
2
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A monoatomic gas of $n$ moles is heated from temperature $T_1$ to $T_2$ under two different conditions, (i) at constant volume and (ii) at constant pressure. The change in internal energy of the gas is
A
more when heated at constant volume
B
more when heated at constant pressure
C
same in both the cases
D
zero in both the cases
3
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In a Carnot engine, when the temperatures are $T_2=0^{\circ} \mathrm{C}$ and $T_1=200^{\circ} \mathrm{C}$, its efficiency is $\eta_1$ and when the temperature are $T_1=0^{\circ} \mathrm{C}$ and $T_2=-200^{\circ} \mathrm{C}$, its efficiency is $\eta_2$. Then, the value of $\frac{\eta_1}{\eta_2}$ is
A
0.58
B
0.73
C
0.64
D
0.42
4
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Heat energy absorbed by a system going through the cyclic process shown in the figure is

AP EAPCET 2024 - 21th May Morning Shift Physics - Heat and Thermodynamics Question 1 English
A
$10^7 \pi J$
B
$10^4 \pi \mathrm{~J}$
C
$10^2 \pi \mathrm{~J}$
D
$10^{-3} \pi \mathrm{~J}$
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