Question

A solid sphere and a hollow sphere are heated the same temperature. Point out the true statement.

• A. hollow sphere cools more quickly
• B. both hollow and solid sphere cools equally
• C. solid sphere cools more quickly
• D. none of the statement is true

Answer 1

Answer: (C)

The solid sphere cools more quickly because the thermal conductivity of the solid sphere is more than that of the hollow sphere.