Question

The dimensions of calorie are

• A. $\text{M L}{}^2\text{T}{}^{-2}$
• B. $\text{M L T}{}^{-2}$
• C. $\text{M L}{}^2\text{T}{}^{-1}$
• D. $\text{M L}{}^2\text{T}{}^{-3}$

Answer 1

The correct option is A $\text{M L}{}^2\text{T}{}^{-2}$

calorie is a unit of energy.
$\text{Energy=F.r}$
Its dimensions can be calculated as
$\text{Dimensions of calorie= [M L T}{}^{-2}\text{][L]=[M L}{}^2\text{T}{}^{-2}\text{]}$