JEE Mains Model Paper 2

Question : 31 of 90

Marks: +1, -0

An air bubble comes from the bottom to the surface of a lake of depth 2.5m. The surfacetemperature of the lake is 40°C. The diameter of the bubble at the bottom and at the surfaceare 3.6 mm and 4mm respectively. Find the temperature of the lake at the bottom.