Verified Solution • 2025–26 Session
hard
QJEEM_2024_49: JEE Main 2024 JEEM_2024_49 Solution: A gas undergoes isothermal expansion from 30 dm^3 to 45 dm^3.…
A gas undergoes isothermal expansion from 30 dm^3 to 45 dm^3. Find heat absorbed by gas if external pressure is 10 kPa?
Multiple Choice Options
- A 100 J
- B 150 J
- C 120 J
- D 200 J
Step-by-Step Verified Solution
ΔQ = W = P1V1 ln(V2/V1) => ΔQ = W = 10 × 10³ × 30 × 10⁻³ ln(3/2) => ΔQ = W = 120 J