Question

Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play *

Answer 1

$\large{\underline{\underline{\textsf{{\blue{Answer :- }}}}}}$

Whenever the surfaces in contact tend to move or move with respect to each other, the force of

friction comes into play.

(a) only if the objects are solid.

(b) only if one of the two objects is liquid.

(c) only if one of the two objects is

gaseous.

(d) irrespective of whether the objects are solid, liquid or gaseous.