Answer: Force is not a basic quantity. Physical quantities can be defined as the properties of a substance that can be measured on a suitable scale. There are 7 fundamental physical quantities in physics, namely, length, mass, time, electric current, temperature, amount of substance, and luminous intensity.

Which is not a basic quantity Class 9?

Examples of derived quantities are area, volume, work, speed, etc. Work depends on fundamental quantities like length, mass and time and hence it is a derived quantity. Thus, work is not a fundamental quantity. Hence, the correct answer is option D i.e. work.

Which is a basic quantity?

The present SI has seven base quantities: time, length, mass, electric current, thermodynamic temperature, amount of substance, and luminous intensity.