Friction — task. Physics CBSE Live product, Class 8 (2026-27).

Choose the best answer:

1. Which statement best explains the nature of friction?

Friction always acts in the direction of motion
Friction acts only on moving objects
Friction exists even when surfaces are not touching
Friction opposes motion or attempted motion

2. Two surfaces that look perfectly smooth still experience friction because

They are always dirty
Air gets trapped between them
They contain tiny bumps and grooves
They are magnetic

Login or Fast registration

Previous theory

Exit to the topic

Did you find an error?