Question

Two solid spheres, of radii R₁ and R₂ are made of the same
material and have similar surfaces. The spheres are raised to
the same temperature and then allowed to cool under
identical conditions. Assuming spheres to be perfect
conductors of heat, their initial rates of loss of heat are
(a) R₁² / R₂² (b) R₁ / R₂
(c) R₂ / R₁ (d) R₂²/R₁²

Answer 1

Answer:

Two solid spheres, of radii R₁ and R₂ are made of the same

material and have similar surfaces. The spheres are raised to

the same temperature and then allowed to cool under

identical conditions. Assuming spheres to be perfect

conductors of heat, their initial rates of loss of heat are (a) R₁² / R₂² (b) R₁ / R₂