Question

Name the physical quantity whose dimensional formula is [ML-1T-1]​

Answer 1

Explanation:

Coefficient of viscosity. As

Answer 2

Answer:

The Correct Answer would be Viscosity. The Physical Quantity whose Dimensional Formula is [ML⁻¹T⁻¹] is Viscosity.

Explanation:

What is meant by Dimensional Formula?

When we denote a quantity which is physical in terms of it's basic units, with proper and correct dimensions, the form is commonly known as Dimensional Formula.

The denotation for some basic quantities are under :

1. Length - L
2. Mass - M
3. Time - T
4. Current - A, etc.

Now, for the given question, we have a quantity whose Dimensional Formula is [ML⁻¹T⁻¹] , and that is Viscosity.

Formula for Viscosity is -

Viscosity = (force)÷(Area×Velocity gradient)

Now, Dimensional Formula for Force = [MLT⁻²]

         For Area = [L²]

         For velocity gradient = [T⁻¹]

Hence, writing dimensional formulas :

Viscosity = [MLT⁻²]÷{[L²][T⁻¹]}

Viscosity = [ML⁻¹T⁻¹]

Therefore, Dimensional Formula for Viscosity is [ML⁻¹T-¹].