Question

Consider the following statements:

Statement 1: Irregularities on two surfaces lock into one another.

Statement 2: We have to apply a force to overcome the interlocking so as to move any of the two surfaces in contact.

Choose the correct option:

• A. True
• B. False
• C. Both the statements are correct
• D. None of the statements are correct

Answer 1

The correct option is C Both the statements are correct

Friction is caused by irregularities on two surfaces in contact. Even those surfaces which appear very smooth have a large number of minute irregularities on them. Irregularities on the two surfaces lock into one another. When we want to move any surface, we have to apply a force to overcome the interlocking between them.

​Thus, both the statements are correct.