Two identical copper blocks ( ) are placed in thermal contact inside a perfectly…

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

Two identical

2.0\,\text{kg}

copper blocks (

c = 390\,\text{J}\,\text{kg}^{-1}\,\text{K}^{-1}

) are placed in thermal contact inside a perfectly insulating box and allowed to reach equilibrium. One block is initially at

300\,\text{K}

and the other at

360\,\text{K}

. What is the final equilibrium temperature of the blocks? (a)

340\,\text{K}

(b)

325\,\text{K}

(c)

330\,\text{K}

(d)

320\,\text{K}