Physics · Science General

Units and Measurement

998 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 technology testing
  1. 10

  2. 3

  3. 8

  4. 5

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The maximum unit of CIR (Critical Illness Rider) is 10, which represents the upper limit of coverage that can be added to a base policy. Options B, C, and D (3, 8, and 5) are below this maximum limit and therefore incorrect.

Multiple choice technology packaged enterprise solutions
  1. a. Each

  2. b. Quantity

  3. c. Part number

  4. d. None

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Each (EA) is a standard Unit of Measure in Oracle Inventory and other ERP systems, used for counting individual items. Quantity is a concept, not a UOM itself. Part number is an identifier, not a measurement unit.

Multiple choice
  1. Joule

  2. Gress

  3. Gauss

  4. Weber

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gauss is the CGS unit of magnetic induction (magnetic flux density). It is named after mathematician Carl Friedrich Gauss. Note: option B has a typo ('Gress' instead of 'Gauss') but the claimed answer is still correct.

Multiple choice
  1. electric resistance

  2. power used by a current of one ampere

  3. electromagnetic radio wave frequencies

  4. none of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kilohertz (kHz) is a unit of frequency equal to one thousand cycles per second (10^3 Hz). It is commonly used to measure electromagnetic wave frequencies, especially in radio broadcasting. Electric resistance is measured in ohms, and power is measured in watts.

Multiple choice
  1. Force

  2. Momentum

  3. Energy

  4. Charge

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Joule is the SI unit of energy, work, and heat. It's named after James Joule. Newton measures force, kg-m/s measures momentum, and coulomb measures electric charge.

Multiple choice
  1. metre per second

  2. metre

  3. second

  4. hertz

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hertz (Hz) is the SI unit of frequency, defined as one cycle per second. Frequency measures how many complete oscillations occur per unit time. Options A-C are units of distance or time, not frequency. Option D correctly identifies hertz.

Multiple choice
  1. Celsius

  2. Fahrenheit

  3. Kelvin

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The SI (International System of Units) unit of temperature is Kelvin, abbreviated as K. While Celsius and Fahrenheit are commonly used in everyday life, Kelvin is the scientific standard unit used in physics and chemistry.

Multiple choice
  1. Calorie

  2. Joule

  3. Celsius

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The SI unit of heat is Joule (J), named after James Prescott Joule. While calorie is a common unit for heat energy (1 calorie ≈ 4.18 J), it is not an SI unit. Celsius is a unit of temperature, not heat energy.

Multiple choice
  1. many

  2. 5

  3. 3

  4. 1

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The SI system has many derived units formed by combining base units. Common examples include newton (force), joule (energy), watt (power), pascal (pressure), and volt (voltage). The options 5, 3, and 1 are incorrect - there are far more derived units than these small numbers.