Physics 2018 Past Question | WAEC

Study the following Physics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

  1. The S.I unit for sound energy is

    • A. Hz
    • B. cd
    • C. dB
    • D. J

2. The general definition of elastic modulus is

  • A. \(\frac{stress}{strain}\)
  • B. \(\frac{strain}{stress}\)
  • C. \(stress \times strain\)
  • D.\(\sqrt{\frac{stress}{strain}}\)

3.              PHYSICS 2018 WAEC

The diagram above illustrates a simple barometer. Which distance measures the atmospheric pressure?

  • A. PQ
  • B. QR
  • C. RS
  • D. QS

4. The property of a body to remain at rest or to continue in uniform motion in a straight line is called

  • A. momentum
  • B. Inertia
  • C. impulse
  • D. Energy

5. During a training session, two footballers pass a ball repeatedly between each other. The ‘to and fro’ motion of the ball is not simple harmonic because the

I. Acceleration of the ball is not directed towards a fixed point

II. Restoring force is not directed towards the centre

III. Acceleration of the ball is not directly proportional to the displacement from a fixed point

Which of the statements above are correct?

  • A. I and III only
  • B. I and II only
  • C. II and III only
  • D. I, II and III

6.  A dam is able to hold a large quantity of water because its wall is

  • A. thickest at the top
  • B. thickest at the middle
  • C. thickest at the bottom
  • D. of the same thickness throughout

7.

A body of mass moving around a circle of radius with a uniform speed experiences a centripetal force F. The work done by the centripetal force on it is

  • A. Fv
  • B. zero
  • C. Fmr
  • D. Fr / m

8.PHYSICS 2018 WAEC

A block is acted upon by TWO horizontal forces as illustrated in the diagram above. The block accelerates at 1.5ms−². Calculate the mass of the block.

  • A. 6kg
  • B. 9kg
  • C. 10kg
  • D. 15kg

9. Which of the following quantities are dimensionally independent?

I. Dielectric constant    II. Momentum   III. Efficiency   IV. Refractive index

  • A. I and II
  • B. II, III and IV
  • C. I, II, III and IV
  • D. I, III and IV

10.  A body is projected with an initial velocity u at angle \(\theta\) to the horizontal. If \(R_{max}\) is the maximum range of the projectile, what does the relation \(\frac{u^{2}}{R_{max}}\) represent?

  • A. The vertical distance covered
  • B. Acceleration due to gravity
  • C. The horizontal distance covered
  • D. The acceleration of the body
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