Sir you're a true asset for this nation You're helping students even after your death Thanks you sir and may R.I.P in your divine world❤

What a super explanation sir! You are removing my all doubt! Salute to a legend

Good explanation sir!

NOW THIS IS GOOD EXPLAINING

Amazing teacher...

Oxmm vidd sir

Superb sir

Thanks sir

Tq sir

Nice

Nice theroy

Sir it means that friction occurs because when two surfaces are in contact with each other, such that one is moving over the surface of the other, their molecules, hence atom interact, so and so..., and then occur one cation and one anion, which make ionic bond, so object comes to rest or feels difficulty to move?