Question

In order to reduce friction in machines, ball bearing are used in between the moving parts.

• A. True
• B. False

Answer 1

The correct option is A True

1. Friction is defined as the resistance offered by the surfaces that are in contact when they move past each other.
2. Friction in machines can be reduced by the use of ball bearings in between the moving surfaces.
3. In order to increase the efficiency of a machine, it is necessary to decrease friction.

Hence, the given statement is true.