engineering recuitment HAL Management & Design Trainee Mock Test 2023 Thermodynamics First Law of Thermodynamics
A 100 W electric bulb was switched in a 2.5 m × 3 m × 3 m size thermally insulated room having a temperature of 20°C. The room temperature at the end of 24 hours will be ______. (Take ρ of air at atmospheric temperature and pressure = 1.2 kg/m3).
1
321°C
2
341°C
3
450°C
4
470°C