A sphere, a cube and a thin circular plate, all made of the same material and having the same mass, are initially heated to a temperature of 200°C. When left in air at room temperature, the following cools fastest.

Question

A sphere, a cube and a thin circular plate, all made of the same material and having the same mass, are initially heated to a temperature of 200°C. When left in air at room temperature, the following cools fastest. (A) Sphere (B) Cube (C) Plate (D) All of these

Tardigrade Admin · Accepted Answer

(dT/dt) propto Surface Area for given mass.

Q. A sphere, a cube and a thin circular plate, all made of the same material and having the same mass, are initially heated to a temperature of 200°C. When left in air at room temperature, the following cools fastest.

Sphere

Cube

Plate

All of these

$\frac{d T}{d t} \propto$ Surface Area for given mass.

Q. A sphere, a cube and a thin circular plate, all made of the same material and having the same mass, are initially heated to a temperature of 200°C. When left in air at room temperature, the following cools fastest.

Sphere

Cube

Plate

All of these

dtdT​∝ Surface Area for given mass.

$\frac{d T}{d t} \propto$ Surface Area for given mass.