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 1231: The most suitable cell used for short interval switches in electric bells is a Options:
  A) lead- acid accumulator
  B) Daniel cell
  C) Leclanche cell
  D) nickel iron accumulator
  Show Answer
  The correct answer is C .
• Question 1232: Which of the following is NOT a vector quantity? Options:
  A) altitude
  B) acceleration
  C) displacement
  D) weight
  Show Answer
  The correct answer is A .
• Question 1233: blowing air over a liquid aids evaporation by Options:
  A) increasing its surface area
  B) decreasing its vapour pressure
  C) increasing its temperature
  D) decreasing its density
  Show Answer
  The correct answer is A .
• Question 1234: Which of the following statements on the use of X-rays is incorrect? X-rays are used Options:
  A) in hospitals to obtain photogaphs of tissues and bones in the body
  B) for the treatment of malignant growths like cancer cells
  C) in detecting fingerprints
  D) to reveal hidden flaws in metal castings and welded joints
  E) to detect alternations which have been made to works of art
  Show Answer
  The correct answer is E .
• Question 1235: A real object is placed at a distance ucm in front of a curved mirror of focal length fcm. If the image is upright and magnified, then the mirror is Options:
  A) convex and u =2f
  B) concave and u = 2f
  C) convex and u = f
  D) concave and u = f
  Show Answer
  The correct answer is A .
• Question 1236: If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the Options:
  A) weight of P displaced is greater than that of Q
  B) weight of P displaced is less than that of Q
  C) volume of P displaced is greater than that of Q
  D) volume of P displaced is less than that of Q
  Show Answer
  The correct answer is A .
• Question 1237: an electric cell with nominal voltage E has a resistance of 3Ω connected across it. If the voltage falls to 0.6E, the internal resistance of the cell is Options:
  A) 1Ω
  B) 2Ω
  C) 3Ω
  D) 4Ω
  Show Answer
  The correct answer is C .
• Question 1238: Electrons were discovered by Options:
  A) James Chadwick B.
  B) J.J Thompson
  C) Sir Isaac Newton
  D) Charles Newton
  Show Answer
  The correct answer is B .
• Question 1239:

  A single force which produces the same effect as a set of forces acting together at a point is known as the

  Options:
  A) component
  B) equilibrant
  C) resultant
  D) resistant
  Show Answer
  The correct answer is C .
• Question 1240: If the refractive index of glass is 1.5, what is the critical angle at the air-glass interface? Options:
  A) sin^-1$\frac{1}{2}$
  B) sin^-1$\frac{2}{3}$
  C) sin^-1$\frac{3}{4}$
  D) sin^-1$\frac{8}{9}$
  Show Answer
  The correct answer is B .