A lagged stick of cross section area 1 cm² and length 1 m is initially at a temperature of 0°C. It is then kept between 2 reservoirs of temperature 100°C and 0°C. Specific heat capacity is 10 J kg⁻¹ °C⁻¹ and linear mass density is 2 kg/m. Find: (a) temperature gradient along the rod in steady state. (b) total heat absorbed by the rod to reach steady state. Which of the following gives the correct final result?

Physics · Thermodynamics

JEE Advanced

A lagged stick of cross section area 1 cm² and length 1 m is initially at a temperature of 0°C. It is then kept between 2 reservoirs of temperature 100°C and 0°C. Specific heat capacity is 10 J kg⁻¹ °C⁻¹ and linear mass density is 2 kg/m. Find: (a) temperature gradient along the rod in steady state. (b) total heat absorbed by the rod to reach steady state. Which of the following gives the correct final result?

img7866-1791481782351.webp

Options