Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 901: Which of the following is most suitable for protecting the circuit of 2000W electric iron connected to a 250V mains? Options:
  A) 13A
  B) 8A
  C) 5A
  D) 3A
  Show Answer
  The correct answer is B .
• Question 902: A machine has a velocity ratio of 5. It requires a 50kg weight to overcome a 200kg weight. The efficiency is Options:
  A) 4%
  B) 5%
  C) 40%
  D) 50%
  E) 80%
  Show Answer
  The correct answer is E .
• Question 903: If a charged ion goes through combined electric and magnetic fields, the resultant emergent velocity of the ion is Options:
  A) E/B
  B) EB
  C) B/E
  D) E - B
  Show Answer
  The correct answer is A .
• Question 904:

  A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 rev/s. Calculate the centripetal force

  Options:
  A) 164N
  B) 160N
  C) 158N
  D) 172N
  Show Answer
  The correct answer is B .
• Question 905:

  

  Two horizontal forces, 10N and 8N and another force F1 inclined at 30 to the vertical acting as shown in the diagram above, keep the body P in equilibrium, The weight of the body is

  Options:
  A) 2√3/3N
  B) √2N
  C) 4√3/3
  D) 2V3N
  Show Answer
  The correct answer is D .
• Question 906: Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? Options:
  A) ${}_{28}^{58}X$
  B) ${}_{28}^{30}X$
  C) ${}_{30}^{28}X$
  D) ${}_{30}^{58}X$
  Show Answer
  The correct answer is A .
• Question 907: When a ball rolls on a smooth level ground, the motion of its center is Options:
  A) translational
  B) oscillatory
  C) random
  D) rotational
  Show Answer
  The correct answer is A .
• Question 908:

  An incident ray XY makes an angle of 15${}^{\circ }$ with a fixed line AY which is normal to surface of a plane mirror if the mirrow is turned as indicated by the arrow through ${40}^{\circ }$, what angle will the reflected ray make with AY?

  Options:
  A) ${25}^{\circ }$
  B) ${40}^{\circ }$
  C) ${15}^{\circ }$
  D) ${55}^{\circ }$
  E) ${95}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 909: Calculate the force acting on an electron of charge 1.6 x 10^-19C placed in an electric field of intensity 10⁸Vm^-1 Options:
  A) 1.6 x 10^-11N
  B) 1.6 x 10^-14N
  C) 1.6 x 10^-16N
  D) 1.0 x 10^-16N
  Show Answer
  The correct answer is A .
• Question 910: Ripples on water are similar to light waves in that they both Options:
  A) have the same wavelength
  B) are longitudinal
  C) cannot be reflected
  D) travel at the same speed
  E) can be refracted and diffracted
  Show Answer
  The correct answer is E .