Question

The unit formerly used for measuring heat capacity of a body was:

• A. Calories/('C)
• B. Joules/('C)
• C. Calories
• D. Joules

Answer 1

The correct option is A Calories/('C)

The amount of heat required to raise the temperature of the whole body through $1^o$ or $1K$, is called one heat capacity or thermal capacity and is given by: $w=cm$ ,

where, $c=$ specific heat of body ( unit $=cal./g{/}^o{C}^{-1}$)

$m=$ mass of the body (unit $=g$)

now, $w=g\times cal./g{/}^{o}C=cal.{/}^{o}C$, this was the unit formerly used for measuring the heat capacity of a body.