Physics · Science General

Units and Measurement

1,044 Questions

Master the fundamentals of physics with these practice questions on units and measurement. The topics include fundamental SI units, derived quantities, and specific units for power, force, and light. These questions are essential for building a strong foundation for competitive exams.

SI fundamental unitsUnits of powerDerived quantities unitsThermal energy unitsVolume measurement unitsElectric current units

Units and Measurement Questions

Multiple choice physics energy and its forms idea of energy introduction to work and energy work and energy

$ kg  m^2 s^{-2}$ represents the unit of_____

  1. kinetic energy

  2. work done

  3. potential energy

  4. all the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

the given unit $kgm^2s^{-2}$ is unit of energy and  any of the energy either potential or kinetic will have  same unit 

also work done is given by $F.S$ or $kgms^{-2}.m$ or $kgm^2s^{-2}$
so the unit of work is also same.
so the given unit represent unit for all the three quantities in the options.

Multiple choice physics force concept of force and its unit force - push or pull forces

The strength of a force is usually expressed by its:

  1. unit

  2. magnitude

  3. direction

  4. both unit and magnitude.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A force could be larger or smaller than the other and the strength of the force is expressed by its magnitude only. For example, $1\ N$ of force is larger than $1\ mN$ of force.