KEAM SERIES Physics
Carnot Engine
8 previous year questions.
Volume: 8 Ques
Yield: Medium
High-Yield Trend
5
2026 1
2025 1
2022 1
2021 Chapter Questions 8 MCQs
01
PYQ 2021
medium
physics ID: keam-202
When the temperature of the source of a Carnot engine is at 400 K, its efficiency is 25%. The required increase in temperature of the source to increase the efficiency to 50% is
1
800 K
2
600K
3
100 K
4
400 K
5
200 K
02
PYQ 2022
medium
physics ID: keam-202
An ideal Carnot engine working with source temperature T1, and sink temperature T2, has efficiency n. Then the value of the ratio is
1
2
3
4
n
5
03
PYQ 2025
medium
physics ID: keam-202
The temperature of the source and sink of a heat engine are 127°C and 27°C respectively. By how much should the temperature of the source be increased so as to double the efficiency?
1
100°C
2
200°C
3
150°C
4
50°C
04
PYQ 2026
medium
physics ID: keam-202
Carnot engine operates between temperatures, 600 K and 300 K. If it absorbs 1200 J of heat from source, the work done by the engine is}
1
6000 J
2
3600 J
3
2400 J
4
1200 J
5
600 J
05
PYQ 2026
easy
physics ID: keam-202
Which of the following statement is correct for EM wave:
06
PYQ 2026
easy
physics ID: keam-202
What is the ratio of the longest wavelength in Lyman and Balmer series?
07
PYQ 2026
medium
physics ID: keam-202
A constant force acts on a body at rest, resulting it to move with constant acceleration. If power relates to time as , what is the value of ?
08
PYQ 2026
medium
physics ID: keam-202
If of a rigid diatomic gas and of a non-rigid diatomic gas, find and .