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Lavanya has a sphere, Divya has a cube a...

Lavanya has a sphere, Divya has a cube and Vidya has a disc and all of them are made of same material, same mass and same volume. Which of the objects will have the lowest rate of cooling if they are heated to `600^@C` and left in air?

A

Sphere

B

Cube

C

Disc

D

All will have same rate

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