1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A polyatomic gas with $n$ degrees of freedom has a mean kinetic energy per molecule given by (if $N$ is Avogadro's number )
A
$\frac{n k_B T}{N}$
B
$\frac{n k_B T}{2 N}$
C
$\frac{n k_B T}{2}$
D
$\frac{3 k_B T}{N}$
2
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The absorption coefficient value of a perfect black body is
A
zero
B
$<1$
C
$>1$
D
1
3
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A certain volume of a gas at 300 K expands adiabatically until its volume is doubled. The resultant fall in temperature of the gas is nearly (The ratio of the specific heats of the gas $=1.5$ )
A
88 K
B
77 K
C
67 K
D
54 K
4
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The efficiency of a Carnot's engine is $25 \%$. When the temperature of sink is 300 K . The increase in the temperature of source required for the efficiency to become $50 \%$ is
A
225 K
B
400 K
C
200 K
D
100 K
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