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 measurements and units summary of si units fundamental quantities system of units

Debye is a unit of

  1. rms velocity

  2. force

  3. specific gravity

  4. electric dipole moment
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The correct option is D.

The Debye, represented as D, is a CGS unit of electric dipole moment. This name was given in the honor of the physicist Peter J. W. Debye. Its value is defined as $1 \times { 10 } ^{ -18 }$ statcoulomb-centimetre.

Multiple choice physics measurements and units summary of si units fundamental quantities system of units

$\displaystyle N{ kg }^{ -1 }$ is the unit of 

  1. Retardation

  2. Acceleration

  3. Rate of change of velocity

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Acceleration is measured as   $a = \dfrac{Force}{mass}$

Thus, $N kg^{-1}$ is the unit of acceleration.

Retardation is the acceleration in the opposite direction.

Also, acceleration is defined as rate of change of velocity of the body.
Thus option D is correct.