JAMB and WAEC Physics questions

829 questions with answers and explanations. Tap an option to check yourself.

1. Question 501· Measurements and units· JAMB

   Which instrument would measure the diameter of a thin wire most accurately?

   • Ameasuring tape
   • Bvernier calipers
   • Cmetre rule
   • Dmicrometer screw gauge

   Show answer

   Answer: D. micrometer screw gauge

   Explanation and discussion

2. Question 502· Measurements and units· JAMB

   Which of the following quantities has the same SI unit as energy?

   • Apressure
   • Bpower
   • Cmomentum
   • Dmoment of a force

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   Answer: D. moment of a force

   Explanation and discussion

3. Question 503· Measurements and units· JAMB

   Which of the following is NOT a fundamental SI unit?

   • Amole
   • Bkelvin
   • Campere
   • Dnewton

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   Answer: D. newton

   Explanation and discussion

4. Question 504· Measurements and units· WAEC

   Which of these quantities has the unit kg m⁻³?

   • Apressure
   • Bdensity
   • Cmomentum
   • Dpower

   Show answer

   Answer: B. density

   Explanation and discussion

5. Question 505· Measurements and units· JAMB

   The dimensions of pressure are:

   • AMLT⁻²
   • BML⁻¹T⁻²
   • CML²T⁻²
   • DML⁻²T⁻¹

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   Answer: B. ML⁻¹T⁻²

   Explanation and discussion

6. Question 506· Measurements and units· JAMB

   The smallest reading that can be taken with a standard pair of vernier calipers is

   • A0.001 cm
   • B0.01 cm
   • C0.1 cm
   • D1 cm

   Show answer

   Answer: B. 0.01 cm

   Explanation and discussion

7. Question 507· Measurements and units· WAEC

   Which of these units is NOT a base SI unit?

   • Amole
   • Bampere
   • Ckelvin
   • Djoule

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   Answer: D. joule

   Explanation and discussion

8. Question 508· Measurements and units· WAEC

   The instrument best suited for measuring the diameter of a thin wire is the

   • Ametre rule
   • Bvernier calipers
   • Ctape rule
   • Dmicrometer screw gauge

   Show answer

   Answer: D. micrometer screw gauge

   Explanation and discussion

9. Question 509· Measurements and units· JAMB

   A micrometer screw gauge shows 5.5 mm on the sleeve and 28 divisions on the thimble, each division 0.01 mm. The reading is

   • A5.28 mm
   • B5.528 mm
   • C8.30 mm
   • D5.78 mm

   Show answer

   Answer: D. 5.78 mm

   Explanation and discussion

10. Question 510· Measurements and units· WAEC

    The S.I. unit of power is the

    • Ajoule
    • Bwatt
    • Cnewton
    • Dpascal

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    Answer: B. watt

    Explanation and discussion

11. Question 511· Measurements and units· WAEC

    A micrometer screw gauge has a pitch of 0.5 mm and 50 divisions on the thimble. Its least count is

    • A0.05 mm
    • B0.1 mm
    • C0.5 mm
    • D0.01 mm

    Show answer

    Answer: D. 0.01 mm

    Explanation and discussion

12. Question 512· Measurements and units· JAMB

    The dimensions of force are

    • AMLT⁻¹
    • BML²T⁻²
    • CMLT⁻²
    • DML⁻¹T⁻²

    Show answer

    Answer: C. MLT⁻²

    Explanation and discussion

13. Question 513· Measurements and units· JAMB

    The dimensions of work are

    • AMLT⁻²
    • BML²T⁻²
    • CML²T⁻¹
    • DML⁻¹T⁻²

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    Answer: B. ML²T⁻²

    Explanation and discussion

14. Question 514· Measurements and units· JAMB

    Which of the following is a derived unit?

    • Akilogram
    • Bsecond
    • Campere
    • Dnewton

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    Answer: D. newton

    Explanation and discussion

15. Question 515· Measurements and units· WAEC

    On a vernier caliper the main-scale reading is 2.3 cm and the 6th vernier division coincides with a main-scale mark. If the instrument reads to 0.01 cm, what is the reading?

    • A2.30 cm
    • B2.36 cm
    • C2.96 cm
    • D2.306 cm

    Show answer

    Answer: B. 2.36 cm

    Explanation and discussion

16. Question 516· Measurements and units· WAEC

    Mass is measured with a

    • Amicrometer screw gauge
    • Bspring balance
    • Cbeam balance
    • Dhydrometer

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    Answer: C. beam balance

    Explanation and discussion

17. Question 517· Measurements and units· WAEC

    The dimensions of velocity are

    • AMLT⁻¹
    • BLT⁻²
    • CLT⁻¹
    • DML⁻³

    Show answer

    Answer: C. LT⁻¹

    Explanation and discussion

18. Question 518· Measurements and units· WAEC

    The SI unit of thermodynamic temperature is the

    • Adegree Celsius
    • Bkelvin
    • Cdegree Fahrenheit
    • Djoule

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    Answer: B. kelvin

    Explanation and discussion

19. Question 519· Measurements and units· JAMB

    Which pair of quantities has the same dimensions?

    • Awork and the moment of a force
    • Bforce and pressure
    • Cpower and energy
    • Dvelocity and acceleration

    Show answer

    Answer: A. work and the moment of a force

    Explanation and discussion

20. Question 520· Measurements and units· JAMB

    On a micrometer screw gauge, the sleeve reads 5.5 mm and the thimble reads 0.28 mm. What is the reading?

    • A5.78 mm
    • B5.28 mm
    • C8.30 mm
    • D5.53 mm

    Show answer

    Answer: A. 5.78 mm

    Explanation and discussion