NEET UG 2025 · Physics · Question 41
NEET 2025 Physics, question 41
Question 41 of the NEET 2025 paper (code 45) is a Physics question from Thermodynamics. Its idea, First Law in Isobaric Processes, was asked twice, in 2018 and 2025, across NEET 2017–2026. The NTA final answer key gives option 2.
Updated 2026-10-08
Q41 · Physics
Two gases and are filled at the same pressure in separate cylinders with movable pistons of radius and , respectively. On supplying an equal amount of heat to both the systems reversibly under constant pressure, the pistons of gas and are displaced by 16 cm and 9 cm, respectively. If the change in their internal energy is the same, then the ratio is equal to
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Official answer: option 2 · NTA final answer key
Same idea
First Law in Isobaric Processes, in other papers
NEET asked this idea twice, in 2018 and 2025. The other question below.
- 2018 Q1The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph. The ratio of work done by the gas, to the heat…Figure-based · Medium
First Law in Isobaric Processes: every question and how it was framed
The chapter
Thermodynamics in ten years of NEET
32 questions from 2017–2026, asked in 10 of 10 papers, about 3.1 a paper. Laws of Thermodynamics alone had 10.