Introductory slides to Physics XI course CBSE which are part of the Physics 1 course being offered at swayam.gov.in.

1. Physics 1 –W1 C1 M1
Introduction

23. Name Relative Strength Range Operates Along
Gravitational Force 10-39 Infinite All Objects of the
Universe
Weak nuclear Force 10-13 Very Short,
Sub Nuclear Size (10-16m)
Some elementary
particles,
particularly
electron and
neutrino
Electromagnetic
Force
10-2 Infinite Charged Particles
Strong nuclear
Force
1 Short nuclear size Nucleons, heavier
elementary
particles