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Mechanics

219 MCQ questions with answers and explanations · page 1 of 9

Test yourself▶ 25 question test▶ 50 question test

Q1. The unit of 'work' is-

  1. AJoule
  2. BNewton
  3. CWatt
  4. DDine
Show answer & explanation

Answer: A) Joule

Q2. 'Light year' is the unit of what?

  1. Adistance
  2. BTime
  3. CLight
  4. DStream
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Answer: A) distance

Q3. What is the SI unit of 'force'?

  1. AKelvin
  2. BNewton
  3. CPascal
  4. DVolt
Show answer & explanation

Answer: B) Newton

Q4. An astronomical unit is related to-

  1. Athe distance between the Sun and the Earth
  2. Bthe distance between the Moon and the Earth
  3. Cthe distance between the Sun and the Moon
  4. Dnone of the above
Show answer & explanation

Answer: A) the distance between the Sun and the Earth

Q5. Parsec is the unit of-

  1. Aof distance
  2. Bof time
  3. Cof the brightness of light
  4. Dof magnetic force
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Answer: A) of distance

Q6. Which one of the following is not correctly matched?

  1. ADecibel – unit of sound intensity
  2. BHorsepower – Unit of power
  3. CNautical mile – Unit of distance in navigation
  4. DCelsius - unit of heat
Show answer & explanation

Answer: D) Celsius - unit of heat

Q7. Lumen is the unit of what?

  1. Aluminous intensity
  2. Bof luminous flux
  3. Cboth of the above
  4. Dnone of these
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Answer: B) of luminous flux

Q8. What is the unit of the physical quantity light?

  1. ASiemens
  2. BTesla
  3. CLux
  4. DWeber
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Answer: C) Lux

Q9. Pascal is the unit of-

  1. Aof humidity
  2. Bof pressure
  3. Cof rain
  4. Dof temperature
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Answer: B) of pressure

Q10. 'Candela' is the unit of-

  1. Aluminous flux
  2. Blight effect
  3. Cluminous pressure
  4. DLuminous intensity
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Answer: D) Luminous intensity

Q11. The SI unit of energy is-

  1. AJoule
  2. BNewton
  3. CHertz
  4. DPascal
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Answer: A) Joule

Q12. What is the unit of measurement of magnetic field?

  1. ATesla
  2. BAmpere
  3. CCoulomb
  4. DOm
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Answer: A) Tesla

Q13. What is the unit of measurement of 'Hertz'?

  1. Awavelength
  2. Bclarity of waves
  3. Cintensity of waves
  4. Dfrequency of waves
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Answer: D) frequency of waves

Q14. The unit of electrical quantity is-

  1. AAmpere
  2. BOm
  3. CVolt
  4. DCoulomb
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Answer: A) Ampere

Q15. What is the unit of power of a lens in SI system?

  1. AWatt
  2. BDiopter
  3. COpter
  4. Dmeter
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Answer: B) Diopter

Q16. The unit of measurement of intensity of sound is-

  1. Acandela
  2. BAmpere
  3. Cnautical miles
  4. DDecibels
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Answer: D) Decibels

Q17. Ampere is the unit of measurement of what?

  1. Avoltage
  2. Bcurrent
  3. Cresistance
  4. DPower
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Answer: B) current

Q18. The SI unit of 'Young's modulus of elasticity' is-

  1. ADyne/cm.
  2. BNewton/m
  3. CNewton/m2
  4. Dm.2/From
Show answer & explanation

Answer: C) Newton/m2

Q19. The SI unit of temperature among the following is—

  1. ARéaumur scale
  2. BKelvin
  3. CAmpere
  4. DCandla
Show answer & explanation

Answer: B) Kelvin

Q20. In which unit can the resistivity of a substance be expressed?

  1. Aohm
  2. Bohm/cm
  3. Cohm cm
  4. Dohm cm2
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Answer: C) ohm cm

Q21. The SI unit of momentum is

  1. AAmpere
  2. Bkgm/sec
  3. CJoule
  4. Dkgm
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Answer: B) kgm/sec

Q22. Consider the following statements regarding the light year: 1. A light year is a unit for measuring very long distances. 2. A light year is a unit for measuring very long time intervals. 3. A light year is a unit for measuring the intensity of light. Which of the given statements is/are correct?

  1. A1, 2 and
  2. B2 and 3 only
  3. C1 and 2 only
  4. Donly 1
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Answer: D) only 1

Q23. Which one of the following is not a unit of energy?

  1. AJoule
  2. Bwatt-hour
  3. CNewton meter
  4. Dkilogram-meter/second2
Show answer & explanation

Answer: C) Newton meter

Q24. What is the SI unit for measuring Luminous Intensity?

  1. AAmpere
  2. BCandela
  3. Cmole
  4. DKelvin
Show answer & explanation

Answer: B) Candela

Q25. Which of the following units measures the same quantity as the SI unit 'Pascal'?

  1. AJoule
  2. BWatt
  3. CTor
  4. DNewton
Show answer & explanation

Answer: C) Tor

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