Question

Which among the following statement is true?

• A. Friction exists between solids only.
• B. Friction exists between liquids only.
• C. Friction exists between gases only.
• D. Friction exists between solids, liquids and gases.

Answer 1

The correct option is D

Friction exists between solids, liquids and gases.

Experiencing frictional force is independent of the state of matter such as solids, liquids and gases.

Friction between solids is observed when we rub our palms. When we pour grease on the floor, it doesn't flow that well. That is because of the friction between the layers of grease. Friction due to air is the reason why a meteorite catches fire when it enters earth's atmosphere.