Question

Can we have a surface with zero friction? Justify.

Answer 1

Hint: Friction describes the ease with which there is relative motion between the two surfaces. It is governed by the value of coefficient of friction between the two surfaces which is also proportional to the extent of physical and chemical interactions between the two surfaces.
Though we can see the idea of zero friction is not true as absolute chemical and physical inertness is not possible, smoothening does reduce the friction significantly.

Complete answer:
No, we cannot have zero friction surfaces. Even if we have used a lot of lubricants. We can reduce the friction but we can never reduce it to zero because every surface will still have minor in them.
A frictionless surface is not possible is not possible because the surface cannot have zero friction surface. According to Newton if a body is in motion it will continue to be in motion, if a body is at rest, it will be in rest until external force is applied to it. Friction is the cause behind this law. Due to friction force a body stops.

Note:
We can see that without friction, we would not be able to hold anything and everything would slide everywhere. If there is a very large amount of friction then it slows down the movement and wears down the surfaces in contact. If we think of friction as grip. We use friction every day, like when our shoes grip the ground so we can propel ourselves forward. If the ground is slippery, and we have very smooth soles, it would be difficult to walk because we have less of a grip on the ground.
Static friction is defined as equal to the applied force (parallel to the surfaces) on the object, as long as the object is at rest. So under this condition, when static friction = 0 when applied force = 0.