Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Which of the following is not a green house gas?

A
CH$$_4$$
B
CO$$_2$$
C
O$$_3$$
D
H$$_2$$O
2
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
3
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
$$2{K_B}T$$
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Carnot cycle of an engine is given below

COMEDK 2021 Physics - Heat and Thermodynamics Question 39 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
COMEDK Subjects