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JAMB UTME 2023

JAMB Physics 2023 past questions

5 objective questions from the 2023 JAMB Physics paper. Answer each one, then reveal the answer and explanation.

All JAMB Physics past questions

  1. Question 1

    Density

    A sample of mass 267 g occupies a volume of 30 cm³. Calculate its density.

    1. Option A: 0.11 g/cm³
    2. Option B: 89 g/cm³
    3. Option C: 8.9 g/cm³
    4. Option D: 4.45 g/cm³
    Show the answer to question 1

    Answer: C, 8.9 g/cm³

    Density = mass ÷ volume = 267 ÷ 30 = 8.9 g/cm³.

  2. Question 2

    Current electricity

    A potential difference of 10 V is applied across a 5 Ω resistor. Find the current that flows.

    1. Option A: 2 A
    2. Option B: 50 A
    3. Option C: 0.5 A
    4. Option D: 4 A
    Show the answer to question 2

    Answer: A, 2 A

    By Ohm's law, I = V ÷ R = 10 ÷ 5 = 2 A.

  3. Question 3

    Heat

    How much heat is needed to raise the temperature of 0.4 kg of aluminium by 10 °C? (Specific heat capacity of aluminium = 900 J/kg K.)

    1. Option A: 1,800 J
    2. Option B: 360 J
    3. Option C: 3,600 J
    4. Option D: 9,000 J
    Show the answer to question 3

    Answer: C, 3,600 J

    Q = mcΔθ = 0.4 × 900 × 10 = 3,600 J.

  4. Question 4

    Waves

    A wave of frequency 200 Hz has a wavelength of 4 m. Find its speed.

    1. Option A: 50 m/s
    2. Option B: 0.02 m/s
    3. Option C: 1600 m/s
    4. Option D: 800 m/s
    Show the answer to question 4

    Answer: D, 800 m/s

    v = fλ = 200 × 4 = 800 m/s.

  5. Question 5

    Pressure

    A force of 200 N acts on an area of 0.5 m². Find the pressure exerted.

    1. Option A: 100 Pa
    2. Option B: 200 Pa
    3. Option C: 400 Pa
    4. Option D: 800 Pa
    Show the answer to question 5

    Answer: C, 400 Pa

    Pressure = force ÷ area = 200 ÷ 0.5 = 400 Pa.

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