A circular plate, a cube and a sphere all made up of same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?
A. Circular plate
B. Cube
C. Sphere
D. All will cool at the same rate
Answer: Option C
Related Questions on Heat and Thermodynamics
A. Zeroth Law of Thermodynamics
B. First Law of Thermodynamics
C. Second Law of Thermodynamics
D. Third Law of Thermodynamics
A black body can absorb radiations of
A. lower wavelengths only
B. intermediate wavelengths only
C. higher wavelengths only
D. all wavelengths

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