For isothermal process, PV = constant (Boyle's Law). If V₂ = 2V₁, then P₁V₁ = P₂V₂. So P₂ = P₁V₁/2V₁ = P₁/2. The pressure halves.
Back to JEE Main 2024 Thermodynamics
JEE Main 2024 — Physics Thermodynamics
easy
mcq
2024
Official previous-year question
Verified 30 May 2026.
Question
An ideal gas undergoes isothermal expansion at temperature T. If the volume doubles, by what factor does the pressure change?
Options
- A
Doubles
- B
Halves
- C
Remains same
- D
Becomes 1/4
Solution
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