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COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The collision of the molecules of an ideal gas is taken as

A
elastic
B
inelastic
C
partially elastic
D
partially inelastic
2
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The average energy associated with a monoatomic molecule is

A
$${K_B}T$$
B
$${1 \over 2}{K_B}T$$
C
$${3 \over 2}{K_B}T$$
D
$$2{K_B}T$$
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Carnot cycle of an engine is given below

COMEDK 2021 Physics - Heat and Thermodynamics Question 27 English

Total work done by the gas in one cycle is

A
$$\mu R{T_2}\log {{{V_2}} \over {{V_1}}} - \mu R{T_1}\log {{{V_3}} \over {{V_4}}}$$
B
$$\mu R{T_1}\log {{{V_2}} \over {{V_1}}} - \mu R{T_2}\log {{{V_3}} \over {{V_4}}}$$
C
$$\mu R{T_1}\log {{{V_2}} \over {{V_1}}} + \mu R{T_2}\log {{{V_3}} \over {{V_4}}}$$
D
Zero
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A compound slab is made of two parallel plates of copper and brass of the same thickness and having thermal conductivities in the ratio 4 : 1. The free face of copper is at 0$$^\circ$$C. The temperature of the interface is 20$$^\circ$$C. What is the temperature of the free face of brass?

A
0$$^\circ$$C
B
20$$^\circ$$C
C
40$$^\circ$$C
D
100$$^\circ$$C
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