Question

The dimensional formula of latent heat is identical to that of

• A. internal energy
• B. angular momentum
• C. gravitational potential
• D. electric potential

Answer 1

The correct option is C gravitational potential

Latent heat is given by:
$Q=mL$
$\Rightarrow L=\frac{Q}{m}$ i.e Energy per unit mass.
a) internal energy has the units of energy
b) angular momentum has the units Joule-sec, i.e Energy.second
c) Gravitational potential is the potential energy per unit mass, i.e Energy per mass
d) Electric potential is the potential energy per unit charge.