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 271: The areas of the effort and load pistons of a hydraulic press are 0.5m² and 5m² respectively. If a force F₁ of 100N is applied on the effort piston, the force F₂ on the load is Options:
  A) 10N
  B) 100N
  C) 500N
  D) 1000N
  E) 5000N
  Show Answer
  The correct answer is D .
• Question 272:

  Natural radioactivity consists of the emission of

  Options:
  A) α- particles and β-rays
  B) α- particles and X-rays
  C) α- particles, β - rays and g-rays
  D) γ- rays and X-rays
  Show Answer
  The correct answer is C .
• Question 273: If a mango fruit dropped at a height of 50 meters. How long does it reach the ground? (take g = 10m/s²) Options:
  A) 2 sec
  B) 3 sec
  C) 4sec
  D) 3.2sec
  Show Answer
  The correct answer is D .
• Question 274:

  A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms${}^{-1}$ from the top of a tower 10m high. Neglecting air resistance, its total energyjust before hitting the ground is? (Take g = 10ms${}^{-2}$)

  Options:
  A) 5J
  B) 10J
  C) 15J
  D) 20J
  Show Answer
  The correct answer is C .
• Question 275:

  The near point of a patient's eye is 50.0 cm. What power (in diopters) must a corrective lens have to enable the eye to see clearly an object 25.0 cm away?

  Options:
  A) 2 diopters
  B) 2.5 diopters
  C) 0.5 diopters
  D) 3 diopters
  Show Answer
  The correct answer is A .
• Question 276:

  Transformers are designed so that energy losses are reduced to a minimum. This is achieved through those process.I. Using a soft iron ore

  II. Laminating the iron core to reduce energy loses due to eddy current

  III. Designing an efficient iron core

  Options:
  A) I & II only
  B) II only
  C) I, II, & III only
  D) III only
  Show Answer
  The correct answer is C .
• Question 277:

  A simple pendulum, has a period of 5.77 seconds. When the pendulum is shortened by 3 m, the period is 4.60 seconds. Calculate the new length of the pendulum

  Options:
  A) 5.23 m
  B) 6.42 m
  C) 4.87 m
  D) 7.26 m
  Show Answer
  The correct answer is A .
• Question 278: A handbag containing some load weighing 162N is carried by two students each holding the handle of the bag next to him. If each handle is pulled ${60}^{\circ }$ to the vertical, find the force on each student's arm Options:
  A) 81N
  B) 121N
  C) 162N
  D) 324N
  Show Answer
  The correct answer is C .
• Question 279:

  In the molecular explanation, heat is transferred by the

  Options:
  A) free electrons
  B) free atoms
  C) free molecules
  D) free solids
  Show Answer
  The correct answer is A .
• Question 280: If 8 x 10^-2J of work is required to move 100$\mu$C of charge from a point X to a point Y in an electrical circuit, the potential difference between X and Y is Options:
  A) 4.0 x 10² v
  B) 4.0 x 10⁴ v
  C) 8.0 x 10² v
  D) 8.0 x 10² v
  Show Answer
  The correct answer is C .