WAEC Physics questions

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

1. Question 221· Magnets and magnetic fields· WAEC

   Iron filings sprinkled around a bar magnet gather most thickly at

   • Athe poles
   • Bthe middle of the magnet
   • Cplaces far from the magnet
   • Done side only

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   Explanation and discussion

2. Question 222· Magnets and magnetic fields· WAEC

   Magnetic shielding of a sensitive instrument is done by surrounding it with

   • Aa glass box
   • Ba copper sheet
   • Ca plastic case
   • Da soft iron ring

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3. Question 223· Measurements and units· WAEC

   Which of the following quantities is measured in kg/m³?

   • APressure
   • BDensity
   • CMomentum
   • DForce

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4. Question 224· Measurements and units· WAEC

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

   • Apressure
   • Bdensity
   • Cmomentum
   • Dpower

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5. Question 225· Measurements and units· WAEC

   Which of these units is NOT a base SI unit?

   • Amole
   • Bampere
   • Ckelvin
   • Djoule

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6. Question 226· 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

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7. Question 227· Measurements and units· WAEC

   The S.I. unit of power is the

   • Ajoule
   • Bwatt
   • Cnewton
   • Dpascal

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8. Question 228· 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

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9. Question 229· 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

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10. Question 230· Measurements and units· WAEC

    Mass is measured with a

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

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11. Question 231· Measurements and units· WAEC

    The dimensions of velocity are

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

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12. Question 232· Measurements and units· WAEC

    The SI unit of thermodynamic temperature is the

    • Adegree Celsius
    • Bkelvin
    • Cdegree Fahrenheit
    • Djoule

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13. Question 233· Measurements and units· WAEC

    What are the dimensions of momentum?

    • AML⁻¹T
    • BMLT⁻²
    • CML²T⁻¹
    • DMLT⁻¹

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    Explanation and discussion

14. Question 234· Measurements and units· WAEC

    The SI unit of electric charge is the

    • Acoulomb
    • Bampere
    • Cvolt
    • Dohm

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15. Question 235· Motion· WAEC

    A bus travels from Benin to Ore, 210 km away, and back again in 6 hours. Find its average speed.

    • A0 km/h
    • B35 km/h
    • C105 km/h
    • D70 km/h

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16. Question 236· Motion· WAEC

    What does the gradient of a velocity-time graph give?

    • Adistance travelled
    • Bacceleration
    • Cdisplacement
    • Dmomentum

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17. Question 237· Motion· WAEC

    A car starts from rest and reaches 24 m/s in 8 s with uniform acceleration. Find the acceleration.

    • A16 m/s²
    • B192 m/s²
    • C0.33 m/s²
    • D3 m/s²

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18. Question 238· Motion· WAEC

    Find the momentum of a 5 kg trolley moving at 4 m/s.

    • A20 kg m/s
    • B40 kg m/s
    • C1.25 kg m/s
    • D9 kg m/s

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19. Question 239· Motion· WAEC

    A stone is dropped from the top of a cliff and hits the ground 3 s later. Find the height of the cliff. (g = 10 m/s²)

    • A45 m
    • B30 m
    • C90 m
    • D15 m

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20. Question 240· Motion· WAEC

    A force of 12 N acts on a 3 kg mass. The acceleration produced is

    • A15 m/s²
    • B36 m/s²
    • C0.25 m/s²
    • D4 m/s²

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    Explanation and discussion