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 6 of 14
- A. Meter
- B. Foot
- C. Radian
- D. Centimetre
Explanation: The radian (rad) is the SI unit of angular displacement. It is a dimensionless unit that represents the angle subtended when the arc…
Correct answer: Radian- A. Electric Flux
- B. Magnetic induction
- C. Torque
- D. Luminous intensity of light
Explanation: The candela (cd) is the unit of luminous intensity, specifically the intensity of light as perceived by the human eye.
Correct answer: Luminous intensity of light- A. Fahrenheit
- B. Centigrade
- C. Kelvin
- D. None of the above
Explanation: The Kelvin (K) scale is an absolute temperature scale, starting from absolute zero (0 K), which is the lowest possible temperature where…
Correct answer: Kelvin- A. Geography
- B. Biology
- C. Geology
- D. Physics
Explanation: Physics is the branch of science that deals with the fundamental principles governing the behavior of matter and energy.
Correct answer: Physics- A. Solid state Physics
- B. Quantum Mechanics
- C. Mechanics
- D. Nuclear Physics
Explanation: Mechanics is the branch of physics that deals with the study of motion, forces, and energy.
Correct answer: Mechanics- A. Nuclear Physics
- B. Atomic Physics
- C. Particle Physics
- D. Bio Physics
Explanation: Atomic physics is the branch of physics that specifically deals with the study of atoms, which consist of a nucleus (containing protons…
Correct answer: Atomic Physics- A. Atomic Physics
- B. Astro Physics
- C. Nuclear Physics
- D. Plasma Physics
Explanation: Nuclear physics is the branch of physics that focuses on the study of atomic nuclei, including their structure, behavior, and…
Correct answer: Nuclear Physics108. The Muslim scientist who wrote the books on physics, mathematics, astronomy and engineering was:
- A. Abu-Ali-Hussan Ibn-al-Haitham
- B. Al-Beruni
- C. Yaqub Kindi
- D. Muhammad Bin Musa
Explanation: Alhazen, born in 965 CE in Basra (present-day Iraq) and later residing in Cairo, was a polymath who made significant contributions to…
Correct answer: Abu-Ali-Hussan Ibn-al-Haitham- A. Marconi
- B. Edison
- C. Rutherford
- D. Davison
Explanation: Guglielmo Marconi, an Italian inventor and electrical engineer, is widely credited with the invention of the radio.
Correct answer: Marconi- A. Foot
- B. Meter
- C. Centimetre
- D. Inch
Explanation: The centimeter is the unit of length in the C.G.S. system. It is equal to one hundredth of a meter (1 cm = 0.01 m). The C.G.S.
Correct answer: Centimetre- A. Ampere
- B. Volt
- C. Coulomb
- D. Ohm
Explanation: The ampere (A) is the unit of electric current in the MKS system. One ampere is defined as one coulomb of electric charge flowing per…
Correct answer: Ampere- A. 16th Century
- B. 17th Century
- C. 18th Century
- D. 19th Century
Explanation: The late 19th century marks the beginning of the new era of modern physics.
Correct answer: 19th Century- A. Einstein
- B. Maxwell
- C. Young
- D. Kelvin
Explanation: Albert Einstein, a German physicist, introduced the theory of relativity in two parts: the special theory of relativity in 1905 and the…
Correct answer: Einstein- A. Length
- B. Temperature
- C. Electric charge
- D. Ampere
Explanation: Ampere is not a fundamental quantity. It is a derived quantity. Ampere is the unit of electric current, and electric current is defined in…
Correct answer: Ampere- A. Meter
- B. Newton
- C. Kilogram
- D. Newton.meter
Explanation: The newton·meter (N·m) is the SI unit of torque. Torque is the rotational equivalent of force, and it is calculated by multiplying the…
Correct answer: Newton.meter- A. Pound
- B. Gram
- C. Kilogram
- D. Quintal
Explanation: The kilogram (kg) is the SI unit of mass. It is defined as the mass of the international prototype of the kilogram, which is a…
Correct answer: Kilogram- A. Millimetre
- B. Centimetre
- C. Meter
- D. Kilometer
Explanation: The meter (m) is the base unit of length in the SI system. It is defined as the distance traveled by light in a vacuum during a specific…
Correct answer: Meter- A. Second
- B. Minute
- C. Hour
- D. Day
Explanation: The second (s) is the base unit of time in the SI system. It is defined as the duration of 9,192,631,770 periods of the radiation…
Correct answer: Second- A. Kelvin
- B. Degree centigrade
- C. Degree Fahrenheit
- D. Degree Celsius
Explanation: The kelvin (K) is the base unit of temperature in the SI system. It is defined based on the properties of matter and is the unit used for…
Correct answer: Kelvin- A. Calorie
- B. Joule
- C. Erg
- D. Dyne
Explanation: The joule (J) is the SI unit of energy. It is defined as one newton-meter, which is the work done when a force of one newton acts over a…
Correct answer: Joule