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JAMB UTME 2022

JAMB Physics 2022 past questions

5 objective questions from the 2022 JAMB Physics paper. Answer each one, then reveal the answer and explanation.

All JAMB Physics past questions

  1. Question 1

    Work and energy

    Calculate the kinetic energy of a 8 kg body moving at 8 m/s.

    1. Option A: 512 J
    2. Option B: 32 J
    3. Option C: 64 J
    4. Option D: 256 J
    Show the answer to question 1

    Answer: D, 256 J

    KE = ½mv² = ½ × 8 × 8² = 256 J.

  2. Question 2

    Waves

    A wave of frequency 150 Hz has a wavelength of 1.5 m. Find its speed.

    1. Option A: 225 m/s
    2. Option B: 100 m/s
    3. Option C: 0.01 m/s
    4. Option D: 450 m/s
    Show the answer to question 2

    Answer: A, 225 m/s

    v = fλ = 150 × 1.5 = 225 m/s.

  3. Question 3

    Heat

    How much heat is needed to raise the temperature of 3 kg of copper by 35 °C? (Specific heat capacity of copper = 400 J/kg K.)

    1. Option A: 21,000 J
    2. Option B: 1,200 J
    3. Option C: 14,000 J
    4. Option D: 42,000 J
    Show the answer to question 3

    Answer: D, 42,000 J

    Q = mcΔθ = 3 × 400 × 35 = 42,000 J.

  4. Question 4

    Density

    A sample of mass 20 g occupies a volume of 25 cm³. Calculate its density.

    1. Option A: 1.25 g/cm³
    2. Option B: 0.8 g/cm³
    3. Option C: 8 g/cm³
    4. Option D: 0.4 g/cm³
    Show the answer to question 4

    Answer: B, 0.8 g/cm³

    Density = mass ÷ volume = 20 ÷ 25 = 0.8 g/cm³.

  5. Question 5

    Current electricity

    A potential difference of 3 V is applied across a 3 Ω resistor. Find the current that flows.

    1. Option A: 9 A
    2. Option B: 1 A
    3. Option C: 2 A
    4. Option D: 6 A
    Show the answer to question 5

    Answer: B, 1 A

    By Ohm's law, I = V ÷ R = 3 ÷ 3 = 1 A.

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