Units & Measurements
Class 11 · Units & Measurements
Dimensional Formula
Pick powers of M, L, T and see canonical physical quantities with matching dimensions.
Key Notes
01
Dimensional formula: [quantity] = MᵃLᵇTᶜ. E.g., [F] = MLT⁻², [E] = ML²T⁻².
02
Dimensionless quantities: angle (rad), refractive index, strain, etc.
03
Two quantities with the same dimensions can be added or equated.
Important Points
Dimensional analysis can derive formulas up to a dimensionless constant.
Dimensional Formula notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.