MUET / Sukkur IBA Engineering Physics: Work & Energy MCQs

Practice Work & Energy MCQs for MUET / Sukkur IBA Engineering Physics — topic-wise sets with solved answers.

MUET / Sukkur IBA Engineering Physics: Work & Energy MCQs — sample questions

  1. Question 1

    Q1. A 2 kg block is moving at 4 m/s. What is its kinetic energy?

    • A) 8 J
    • B) 16 J
    • C) 32 J
    • D) 64 J

    Answer: 16 J

    Explanation: Kinetic energy = 1/2 mv² = 1/2 * 2 * 4² = 16 J, using the formula for kinetic energy.

  2. Question 2

    Q2. A force of 5 N acts on a body, displacing it by 3 m. What is the work done?

    • A) 10 J
    • B) 15 J
    • C) 20 J
    • D) 25 J

    Answer: 15 J

    Explanation: Work done = F * d = 5 * 3 = 15 J, using the formula for work done.

  3. Question 3

    Q3. A spring has a spring constant of 100 N/m. What is the work done in compressing it by 2 m?

    • A) 100 J
    • B) 200 J
    • C) 2000 J
    • D) 400 J

    Answer: 200 J

    Explanation: Work done = 1/2 kx² = 1/2 * 100 * 2² = 200 J, then 1/2 * 100 * 4 = 200 J.

  4. Question 4

    Q4. A body of mass 5 kg is lifted to a height of 10 m. What is the potential energy gained?

    • A) 490 J
    • B) 500 J
    • C) 4905 J
    • D) 5000 J

    Answer: 490 J

    Explanation: Potential energy PE = mgh. Using g = 9.8 m/s²: PE = 5 × 9.8 × 10 = 490 J.

  5. Question 5

    Q5. A block of mass 2 kg is attached to a spring of spring constant 100 N/m. The block is displaced by 0.2 m and released. What is its kinetic energy when it passes through the equilibrium position?

    • A) 2 J
    • B) 4 J
    • C) 6 J
    • D) 8 J

    Answer: 2 J

    Explanation: Kinetic energy = 1/2 kx² = 1/2 * 100 * 0.2² = 2 J, using conservation of energy.

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