Units and Measurements | CLASS 11 Physics | Complete Chapter | NCERT Covered | Prashant Kirad

Introduction to Physical Quantities00:01:40

Explanation of physical quantities as measurable properties, consisting of a numerical value and a unit. Introduction to the concept of units as international standards.

Types of Units00:06:04

Distinction between fundamental units (the seven base units like Mass, Length, Time, etc.) and derived units, which are combinations of fundamental units.

System of Units & Supplementary Quantities00:14:01

Overview of FPS, CGS, and MKS systems. Introduction to supplementary quantities: plane angle (radians) and solid angle (steradians).

Dimensional Analysis00:27:16

Detailed explanation of dimensional formulas, how to derive them using fundamental symbols, and their importance in physics problems.

Principle of Homogeneity00:47:05

The principle stating that an equation is dimensionally correct only if the dimensions of each term on both sides are the same, used to check equation validity.

Application of Dimensional Analysis01:06:03

Using dimensional analysis to derive physical formulas (e.g., Simple Pendulum time period, Centripetal Force) and understanding its limitations.

Significant Figures and Rounding Off01:08:00

Rules for determining significant figures in calculations, followed by the rules for rounding off decimals to maintain appropriate precision in answers.

Error Analysis & Propagation01:32:24

Comprehensive guide to calculating absolute, relative, and percentage errors, and rules for error propagation during addition, subtraction, multiplication, and division.