Question

give the old view and modern view of the cause of friction.??

Answer 1

old view tells about the uneven surfaces of 2 bodies and new view tells about the adhesive force

Answer 2

Answer: according to old view of roughness of surface is the cause of friction, when two bodies are in contact.

While according to modern view, the strong atomic or molecular force of attraction between the two surfaces at the points of actual contact is the cause of friction.

Explanation: