Question

1.Whenever the surfaces in contact tend to mOve or move
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.


1.Whenever the surfaces in contact tend to mOve or move
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.


pls explain it also I'm not understanding it







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Answer 1

Answer:

d option

friction force is applicable for all states of matter as no substance is ideal or frictionless