Question

Two spheres of the same radius are made from the same material. One is hollow and the other is solid. If they are heated together from $20 \, ^\circ C$ to $100 \, ^\circ C$ .

• A. both will expand equally
• B. hollow sphere will expand more
• C. solid sphere will expand more
• D. the relative expansion of solid and hollow sphere depends on the material of sphere

Answer 1

Answer: (A)

both will expand equally as thermal expansion depends on size, material and temperature, which are same in all the two.