Question: What is the dimensional formula for pressure?

Options:

1. M¹L⁻¹T⁻²
2. M¹L²T⁻²
3. M⁰L⁰T⁰
4. M¹L⁰T⁻²

Correct Answer: M¹L⁻¹T⁻²

Solution:

Pressure is defined as force per unit area. The dimensional formula for force is M¹L¹T⁻², and for area is L², thus pressure = M¹L¹T⁻² / L² = M¹L⁻¹T⁻².