Question

What is the dimensional formula of latent heat?
1. ML²T^-2
2. ML¹T^-2
3. M²L¹T^-2
4. M⁰L²T^-2

Answer 1

Correct Answer - Option 4 : M⁰L²T^-2

Option 4 is correct, i.e. M⁰L2T-2.

• Latent heat:
  • The heat required to convert a solid into a liquid or vapor, or a liquid into a vapor, without change of temperature.
  •  The amount of heat per unit mass transferred during the change of state of the substance is called the latent heat of the substance for the process.
  • Its S.I unit is KJ/Kg.
  • Its dimensional formula is M0L2T-2.

List of some quantities and their dimensions:

Quantities	Dimension
Dynamic viscosity	M1L-1T-1
Kinematic viscosity	L2T−1
Magnetic Flux	ML2T2I
Magnetic field	M1 T-2 I-1
Power	ML2T-3
Latent heat	M0L2T-2
Voltage	ML2T-3I-1
Resistivity	ML3T-3I-2
Torque	M1L2T-2
Work	ML2T-2
Pressure	ML-1T-2
Force	ML1T-1
Surface Tension	M1L0T-2