A solid copper sphere (density and specific heat ) of radius at an initial…

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A solid copper sphere (density

\rho

and specific heat

c

) of radius

r

at an initial temperature

200\text{ K}

is suspended inside a chamber whose walls are at almost

0\text{ K}

. Find the time required for the temperature of the sphere to drop to

100\text{ K}