Free Measurements MCQs with Answers
262 Measurements MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Physical quantities are expressed with SI base and derived units, while measurement limits are described through accuracy, precision, absolute and percentage error, and significant figures. Dimensional analysis checks equations, derives relationships and detects inconsistent units, but it cannot determine numerical constants or distinguish quantities with identical dimensions.
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262 questions · page 10 of 14
- A. Uranium
- B. Rubidium
- C. Cesium
- D. Radium
Explanation: The definition of a second in the SI system is based on the properties of cesium atoms.
Correct answer: Cesium182. One Angstrom equals:
- A. 10-8 cm
- B. 108 m
- C. 10-6 m
- D. 108 mm
Explanation: As centi is equal to 10-2,10-8 × 10-2 m = 10-10 mWhich is equal to one angstrom.
Correct answer: 10-8 cm- A. 1010 Hz
- B. 109 Hz
- C. 107 Hz
- D. 10-10 Hz
Explanation: As Giga is equal to 10⁹ therefore,10 × 10⁹ Hertz = 10¹⁰ HertzHence, this option is correct.
Correct answer: 1010 Hz- A. Kg m/s2
- B. Dyne
- C. kWh
- D. Joules / sec
Explanation: Kilowatt-hour (kWh) is indeed a unit of electrical energy. It's commonly used to measure the amount of energy consumed or produced over…
Correct answer: kWh- A. 102 dynes
- B. 103 dynes
- C. 104 dynes
- D. 105 dynes
Explanation: One Newton is equal to 10^5 dynes in the CGS (centimeter-gram-second) system of units.
Correct answer: 105 dynes- A. Impulse and Momentum
- B. Stress and Strain
- C. Pressure and Density
- D. Gravitational potential and Energy
Explanation: Both impulse and momentum have the same unit of dimensions. Impulse is defined as force multiplied by time, while momentum is the product…
Correct answer: Impulse and Momentum- A. Energy
- B. Work
- C. Power
- D. Momentum
Explanation: Explanation of this question will be added soon!
Correct answer: Momentum- A. 2
- B. 4
- C. 5
- D. 1
Explanation: Significant figures are the meaningful digits in a number that indicate its precision.
Correct answer: 2- A. Natural
- B. Social
- C. Physical
- D. Biological
Explanation: The best fit for the properties and behavior of non-living things among these options would be C) Physical Sciences as it specifically…
Correct answer: Physical- A. China
- B. Indus valley
- C. Euphrates
- D. Egypt
Explanation: The decimal system, which is based on powers of ten, is attributed to the ancient civilization of Indus Valley.
Correct answer: Indus valley- A. Definition
- B. Experiment and measurement
- C. Hypothesis
- D. A collection of skills
Explanation: Physics is primarily based on experiment and measurement. It relies on conducting experiments to observe natural phenomena, collecting…
Correct answer: Experiment and measurement- A. Chemistry
- B. Mathematics
- C. Statistics
- D. Physics
Explanation: Physics explores the fundamental laws governing the universe, studying matter, energy, motion, and the forces acting upon them.
Correct answer: Physics- A. Greeks
- B. Chinese
- C. Thales
- D. Einstein
Explanation: Thales of Miletus, an ancient Greek philosopher, did indeed observe static electricity phenomena, such as the attraction of amber (a…
Correct answer: Thales- A. Electromagnetic Theory
- B. Faraday' laws
- C. Theory of relativity
- D. Collision theory
Explanation: Explanation of this question will be added soon!
Correct answer: Theory of relativity- A. Particles in space
- B. Elementary particle
- C. Neutrons Protons
- D. Electrons
Explanation: Explanation of this question will be added soon!
Correct answer: Particles in space- A. Geography
- B. Geology
- C. Biology
- D. Physics
Explanation: The branch of science that deals with the properties of matter and energy, as well as their interactions, is called physics.
Correct answer: Physics- A. Interaction between matter and energy
- B. Energy of the material
- C. Mass of the material
- D. Neither energy nor matter
Explanation: Physics is primarily concerned with the interaction between matter and energy, including the properties of matter like mass, the various…
Correct answer: Interaction between matter and energy- A. 1.5 inches
- B. 2.6 inches
- C. 5.5 inches
- D. 10.5 inches
Explanation: To convert mm to inch, we divide the value provided in mm by 25.4. Hence,65 ÷ 25.4 = 2.6 inches.
Correct answer: 2.6 inches- A. 0.47 cm
- B. 47 x 10^-4 cm
- C. 4.7 x 10^-2 cm
- D. 0.0000047 x 10^4 cm
Explanation: Comparing all these values, the largest quantity is 0.47 cm, which corresponds to option A.
Correct answer: 0.47 cm- A. Acceleration
- B. Distance
- C. Velocity
- D. Force
Explanation: The SI unit of distance is m where milli is the prefix.
Correct answer: Distance