Free Measurements MCQs with Answers

• A. 1
• B. 2
• C. 3
• D. 4

Explanation: The following is the solution:In multiplication and division, the final result is limited to numbers containing the least number of…

• A. 3
• B. 4
• C. 5
• D. 6

Explanation: The following is the solution: The number 0.4793 has four significant figures.

• A. Heat intensity
• B. Light intensity
• C. Energy/time
• D. Energy/area

Explanation: The Candela is specifically a unit for measuring luminous intensity, which is the amount of light emitted in a particular direction.

• A. Ampere
• B. Second
• C. Meter per second
• D. Candela

Explanation: In summary, the correct answer is option c) Meter per second, as it is not a base unit in the SI system.

• A. L = 8.0 x 10^6 mm
• B. L = 0.8 km
• C. L = 0.8 x 10^2 m
• D. L = 8.0 x 10^3 m

Explanation: B is the answer as converting 80000 cm to meters would give us 800 m as we divide 80000 cm by 100 cm/m.

• A. kg m-1 s-2
• B. kg m-2 s-2
• C. kg m-3 s-2
• D. kg ms-3

Explanation: The Young modulus is basically the stress over strain where stress is force/area and the strain has no units.

• A. Power
• B. Frequency
• C. Refractive Index
• D. Impulse

Explanation: Option A: Power is the rate at which energy is transferred. It is measured in watts, which are equivalent to joules per second.

• A. Mass
• B. Intensity of light
• C. Velocity
• D. Length

Explanation: Option A: Mass (kilogram, kg) is the amount of matter in an object. It is a fundamental property of matter that does not depend on the…

• A. 191.25 mm2
• B. 195.8 mm2
• C. 196 mm2
• D. 200 mm2

Explanation: The following is the solution:Here are the "significant figure" rules: When adding or subtracting quantities, the sum/difference should be…

• A. 4
• B. 3
• C. 2
• D. 1

Explanation: Some of the basics rules for significant figures are:All non-zero digits are significant.Zeros between non-zero digits are significant.A…

• A. L-1T-1
• B. LT-3
• C. LT -4
• D. L-2T-2

Explanation: The following is the solution:For the principle of homogeneity:V =ct3(LT-1) =c(T3)c =LT-1/T3c =LT-4.

• A. Meter, Kilogram and Kilo second
• B. Kilometre, Kilogram and Hour
• C. Meter, Kilogram, and Second
• D. Centimetre, Centigram and Second

Explanation: The following is the solution:Meter (m) remains the same as in options (a) and (b).Kilogram (kg) remains the same as in options (a) and…

• A. 0.018 kg/mol
• B. 0.108 kg/mol
• C. 0.027 kg/mol
• D. 0.0635 kg/mol

Explanation: The average mass of one H2O molecule is 18.02 amu. The number of atoms is an exact number, the number of mole is an exact number; they do…

• A. 57.3 degrees
• B. 360 degrees
• C. π degrees
• D. π2 degrees

Explanation: The following is the solution:1 rad × 180/π = 57.296°

• A. 1.5%
• B. 5%
• C. 1%
• D. 6%

Explanation: The following is the solution:Area = length x widthRelative uncertainties are added, when two quantities are multiplied.For addition or…

• A. 0.20 cm
• B. 0.002 m
• C. 2.00 mm
• D. 0.2 cm

Explanation: The following is the solution:Since least count is 0.01 mm, therefore, diameter must be expressed in multiples of 0.01.2.00 mm is 200…

• A. Kgms-2
• B. Kgcms-2
• C. Kgm2s2
• D. Kgms2

Explanation: The following is the solution:Since F=ma ,where m: mass in kg,a: acceleration in m/s²,F = Kgms-2 = Newton

• A. Distance travelled by earth in one year
• B. Distance travelled by a star in one year
• C. Distance travelled by light in one year
• D. Distance travelled by light in one galactic year

Explanation: A light-year is defined as the distance that light travels in one year in a vacuum.

• A. Calorie
• B. None of these
• C. Kilowatt
• D. Joule

Explanation: 'Kilowatt' is a unit of power. Calorie and joule, on the other hand, are the units of energy where one calorie is equal to 4.18 J.

• A. Has direction
• B. Has magnitude
• C. Follow rules of vector addition
• D. Derived from time only

Explanation: All vectors follow rules of vector addition. They have both; magnitude and direction.