Question

Friction causes wastage of energy. true or false?The smoother a surface is,the ........................ (greater /lesser) will be the friction.​

Answer 1

Answer:

first is true and second is less

Answer 2

Answer: true, lesser

Explanation: Friction causes heat to be generated. Hence it causes wastage of energy. Friction arises due to irregularities in the surfaces. The smoother the surface, lesser will be irregularities and hence lesser will be the friction.

Hope it helps you. All the best.