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WAEC WASSCE 2024

WAEC Physics 2024 past questions

5 objective questions from the 2024 WAEC Physics paper. Answer each one, then reveal the answer and explanation.

All WAEC Physics past questions

  1. Question 1

    Waves

    A wave of frequency 600 Hz has a wavelength of 5 m. Find its speed.

    1. Option A: 3000 m/s
    2. Option B: 120 m/s
    3. Option C: 0.0083 m/s
    4. Option D: 6000 m/s
    Show the answer to question 1

    Answer: A, 3000 m/s

    v = fλ = 600 × 5 = 3000 m/s.

  2. Question 2

    Units and measurement

    What is the SI unit of power?

    1. Option A: Joule
    2. Option B: Newton
    3. Option C: Watt
    4. Option D: Volt
    Show the answer to question 2

    Answer: C, Watt

    Power is measured in watts (W), joules per second.

  3. Question 3

    Pressure

    A force of 1000 N acts on an area of 0.2 m². Find the pressure exerted.

    1. Option A: 200 Pa
    2. Option B: 2,500 Pa
    3. Option C: 10,000 Pa
    4. Option D: 5,000 Pa
    Show the answer to question 3

    Answer: D, 5,000 Pa

    Pressure = force ÷ area = 1000 ÷ 0.2 = 5,000 Pa.

  4. Question 4

    Current electricity

    A potential difference of 25.2 V is applied across a 21 Ω resistor. Find the current that flows.

    1. Option A: 529.2 A
    2. Option B: 0.83 A
    3. Option C: 2.4 A
    4. Option D: 1.2 A
    Show the answer to question 4

    Answer: D, 1.2 A

    By Ohm's law, I = V ÷ R = 25.2 ÷ 21 = 1.2 A.

  5. Question 5

    Density

    A sample of mass 735 g occupies a volume of 70 cm³. Calculate its density.

    1. Option A: 0.1 g/cm³
    2. Option B: 105 g/cm³
    3. Option C: 5.25 g/cm³
    4. Option D: 10.5 g/cm³
    Show the answer to question 5

    Answer: D, 10.5 g/cm³

    Density = mass ÷ volume = 735 ÷ 70 = 10.5 g/cm³.

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