Heat is generated uniformly at 2 × 1 0 5 W m⁻³ inside a sphere of radius 10 cm and thermal conductivity 40 W m⁻¹ K⁻¹. The surface is held at 300 K. Find the temperature at the centre, in K.

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TestHub · Accepted Answer

T ( r ) = T 0 ​ + 6 k u ( R 2 − r 2 ) ​ . At r = 0 : T = 300 + 6 × 40 2 × 1 0 5 × 0.01 ​ = 308.3 K.

Physics - Heat & Thermo Question with Solution | TestHub

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