Question

If specific heat of a substance is infinite, it means

• A. Heat is given out
• B. Heat is taken in
• C. No change in temperature takes place whether heat is taken in or given out
• D. change in temperature takes place whether heat is absorbed or released

Answer 1

The correct option is C

No change in temperature takes place whether heat is taken in or given out

Specific heat capacity is the amount of energy required by a unit mass of a substance to change its temperature by $1^{\circ }C$ or $1^{\circ }K$.

If specific heat is infinite, than it takes an infinite amount of energy to change its temperature even by $1^{\circ }C$ . Thus, no change in temperature takes place even if you add or subtract heat.

$Q=m.c.△\theta$
$c=\frac{Q}{m.\Delta \theta }$
If $\Delta \theta =0\Rightarrow c=\infty$