Скачать или смотреть KTG: Air Bubble Volume in Swimming Pool | JEE Mains 2026 Solution | 23 Jan Shift 2

In this video, we solve a Kinetic Theory of Gases (KTG) and Thermodynamics problem from the JEE Mains 2026 Shift 2 (23rd January) exam.

Question:
An air bubble of volume 2.9 cm^3 rises from the bottom of a swimming pool of 5 m deep. At the bottom of the pool water temperature is 17°C. The volume of the bubble when it reaches the surface, where the water temperature is 27°C, is ________ cm^3. (g = 10 m/s^2, density of water = 10^3 kg/m^3, and 1 atm pressure is 10^5 Pa)

Options:
1. 2.0
2. 4.5
3. 3.0
4. 4.2

Timestamps:
0:00 - Introduction & Question Setup
0:50 - Conserving Number of Moles (P₁V₁/T₁ = P₂V₂/T₂)
1:07 - Calculating Pressure at the Bottom (P = P₀ + ρgh)
2:03 - Solving for Final Volume (V₂)
2:20 - Final Result: 4.5 cm³ (Option 2)

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