It's answer is false because as the smoothness increases friction decreases

Friction increases with increase in the smoothness of the surface.

Explanation:

Understanding Friction:
- Friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact.
- It is caused by the irregularities present on the surfaces in contact.

Effect of Surface Smoothness on Friction:
- The rougher the surface, the greater the number of irregularities or bumps present on it.
- When two surfaces come in contact, these irregularities interlock with each other, resulting in a greater frictional force.
- So, rough surfaces generally have greater friction than smooth surfaces.

Smooth Surface and Friction:
- A smooth surface has minimal or no irregularities or bumps.
- When a smooth surface comes in contact with another surface, there are fewer points of contact between them.
- As a result, there is less interlocking of irregularities, and hence, less friction is generated.
- Smooth surfaces reduce the contact area between the two surfaces, which reduces the frictional force.

Relationship between Smoothness and Friction:
- Based on the above explanation, it is clear that friction decreases with an increase in the smoothness of the surface.
- Therefore, the statement "Friction increases with an increase in the smoothness of the surface" is incorrect.
- The correct answer is option B, which states that the statement is false.

Conclusion:
- Friction is influenced by the roughness or smoothness of the surfaces in contact.
- Smooth surfaces reduce the frictional force, while rough surfaces increase it.
- It is important to note that there are other factors that can affect friction, such as the force pressing the surfaces together and the nature of the materials in contact.