Question

The pair of quantities that do not have the same dimensions is _________________.

• A. latent heat, specific heat
• B. gravitational force, coulomb force
• C. kinetic energy of a freely failing body, potential energy of a compressed spring
• D. coefficient of friction, number of molecules in a container

Answer 1

The correct option is A latent heat, specific heat

Specific heat is the energy required to change a unit mass of a material by $1^{0}C$. Unit of specific heat is Energy per unit mass per degree

Latent heat is the energy required to change the state (gas, liquid, solid) of a unit mass of material. Unit of latent heat is Energy per unit mass.

Since both latent heat and specific heat has same units, it has same dimension.