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
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kilowatt hour
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watt hour
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watt second
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None of these
A
Correct answer
Explanation
The electric energy used in houses, factories, etc. is measured in kilowatt hour.
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wave length
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lubricants
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density
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temperature
A
Correct answer
Explanation
The angstrom is a unit of length equal to 10^-10 meters, commonly used to measure the wavelength of light and other electromagnetic radiation.
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Degree
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Kelvin
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It has no unit
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None of these
C
Correct answer
Explanation
Refractive index is a ratio of two speeds (speed of light in vacuum to speed of light in the medium), so the units cancel out, making it a dimensionless quantity.
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Meter
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Hertz
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m/s
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None of these
B
Correct answer
Explanation
The SI unit of frequency is the Hertz (Hz), which represents one cycle per second. Meter is for length and m/s is for velocity.
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newtons
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calories
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watts
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hertz
B
Correct answer
Explanation
The energy content of food is traditionally measured in calories (or kilocalories), which represent the amount of heat energy required to raise the temperature of water.
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select Inventory Info > Units of Measurement > Create
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select Inventory Voucher > Units of Measurement > Create
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click F11 > Activate Units of Measurement > Select Units of Measurement > Create
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None of these
A
Correct answer
Explanation
To create units of measurement, we have to select inventory info from gateway of tally, then select units of measurement and then create it. For instance pieces is a unit of measurement.
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Steradian
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Newton-sec
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Pascal-sec
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Pascal
D
Correct answer
Explanation
The SI unit of pressure is the Pascal (Pa), defined as one Newton per square meter. The other options are not standard units of pressure.
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Steradian
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Newton-sec
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Pascal-sec
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Pascal
C
Correct answer
Explanation
The unit of dynamic viscosity is the Pascal-second (Pa*s). Steradian is for solid angles, and Newton-second is for impulse.
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Steradian
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Newton-sec
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Pascal-sec
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Pascal
B
Correct answer
Explanation
Impulse is defined as force multiplied by time, so its SI unit is Newton-second (N-s). Pascal is the unit of pressure.
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Steradian
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Newton-sec
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Pascal-sec
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Pascal
A
Correct answer
Explanation
The steradian is the SI unit of solid angle. It is a three-dimensional analogue of the radian.
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Specific resistance
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Resistance
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Conductivity
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None of these
D
Correct answer
Explanation
mho or siemens are the units of conductance
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Farad
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Newton
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Coulomb
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None of these
B
Correct answer
Explanation
The Newton is the SI unit of force, including electric force. The Coulomb is the unit of electric charge, and the Farad is the unit of electric capacitance.
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Farad
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Newton
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Coulomb
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None of these
A
Correct answer
Explanation
The Farad is the SI unit of electrical capacitance. A capacitor's ability to store charge is measured in Farads.
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Light year
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Microns
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Angstroms
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None of these
C
Correct answer
Explanation
The Angstrom is a unit of length equal to 10^-10 meters, commonly used to express the size of atoms and inter-atomic distances in solids. Microns are larger, and light years are for astronomical distances.
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Farad
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Newton
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Coulomb
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None of these
C
Correct answer
Explanation
The Coulomb is the SI unit of electric charge. It represents the amount of charge transported by a constant current of one ampere in one second.