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 201: During summer, the balance wheel of a clock expands.what effect does this have on the accuracy of the clock? Options:
  A) the clock gians time
  B) the accuracy of the clock is not affected
  C) the clock losses time
  D) the clock stops working
  Show Answer
  The correct answer is C .
• Question 202: If the total force acting on a particle is zero, the linear momentum will Options:
  A) Increase
  B) Decrease
  C) Be Constant
  D) Increase then decrease
  Show Answer
  The correct answer is C .
• Question 203: If a resistance is halved in value and the potential difference across it is tripled, then the ratio of the new current to the old one is Options:
  A) 1 : 6
  B) 1 : 3
  C) 2 : 1
  D) 6 : 1
  Show Answer
  The correct answer is D .
• Question 204: Which of the following arrangements in the sequence shown can be used to obtain a pure spectrum of white light? Options:
  A) source, slit, converging lens, prism, converging lens, screen.
  B) source, slit, diverging lens, prism, diverging lens, screen.
  C) source, converging lens, prism, diverging lens, screen.
  D) source, slit, prism, diverging lens, converging lens, screen.
  E) source, slit, prism, diverging lens, sreen.
  Show Answer
  The correct answer is A .
• Question 205: When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will Options:
  A) increase
  B) decrease
  C) remain the same
  D) increase then decrease
  Show Answer
  The correct answer is B .
• Question 206: The theory of electronic conduction in solids, which satisfactorily explains the properties of conductors, insulators and semi-conductor,is? Options:
  A) string theory
  B) particle theory
  C) group theory
  D) band theory
  Show Answer
  The correct answer is D .
• Question 207:

  The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 180Hz?

  Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is B .
• Question 208: What is the magnitude of the couple which acts on a rotating circular disc of radius 2m, if a constant tangential force of 2N is responsible for the rotation. Options:
  A) 15Nm
  B) 25Nm
  C) 3Nm
  D) 4Nm
  Show Answer
  The correct answer is D .
• Question 209: If the volume of a gas increases steadily as the temperature decreases at constant pressure, the gas obeys Options:
  A) Graham's Law
  B) Boyle's Law
  C) Pressure law
  D) Charles Law
  E) No Correct Option
  Show Answer
  The correct answer is B .
• Question 210: When an atom loses or gains a charge, it becomes Options:
  A) an electron
  B) an ion
  C) a neutron
  D) a proton
  Show Answer
  The correct answer is B .