Question

The factors directly proportional to the amount of heat conducted through a metal rod are -

• A. Time of flow of heat
• B. Area of cross - section
• C. Temperature
• D. All the above

Answer 1

Answer:

D. All the above

Metal expands when heated. Length, surface area and volume will increase with temperature. The scientific term for this is thermal expansion. The degree of thermal expansion varies with different types of metal.