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 1461: Which of the following instruments can be used to measure e.m.f. most accurately. Options:
  A) Ammeter
  B) Galvanometer
  C) Metre bridge
  D) Potentiometer
  E) Voltmeter
  Show Answer
  The correct answer is D .
• Question 1462: When fixed mass of an ideal gas expands at constant temperature, which property of the gas molecule increases? Options:
  A) average number per unit volume
  B) average kinetic energy
  C) average speed
  D) average seperation
  E) average number of collisions per unit time
  Show Answer
  The correct answer is E .
• Question 1463: The space surrounding a magnet in which the magnetic force is exerted is Options:
  A) magnetic field
  B) magnetic flux
  C) magnetic point
  D) magnetic pole
  E) magnetic strength
  Show Answer
  The correct answer is A .
• Question 1464: A regular spacing or arrangement of atoms in a crystalline material is called Options:
  A) Orbit
  B) Lattice
  C) Atomic structure
  D) Energy level
  Show Answer
  The correct answer is B .
• Question 1465:

  Heat I. is a form of energy

  II. is measured with a thermometer

  III. cannot be created or destroyed

  IV. from a hot object is transferred through conduction only. Which of the statements above are correct?

  Options:
  A) I and II only
  B) I and III only
  C) I, II and III only
  D) II, III and IV only
  E) I, II, III and IV
  Show Answer
  The correct answer is B .
• Question 1466:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 1467:

  A source of sound produces waves in air of wavelength1.65m. If the speed of soundin air is 330ms${}^{-1}$, the period of vibration in air is?

  Options:
  A) 200
  B) 0.005
  C) 0.5
  D) 0.02
  Show Answer
  The correct answer is B .
• Question 1468: A machine has an efficiency of 60%. If the machine is required to overcome a load of 30 N with a force of 20 N calculate its mechanical advantage? Options:
  A) 0.7
  B) 0.9
  C) 1.5
  D) 2.5
  E) 10.0
  Show Answer
  The correct answer is C .
• Question 1469: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 1470:

  In a slide wire bridge, the balance is obtained at a point 25cm from one end of wire 1m long. The resistance to be tested is connected to that end and a standard resistance of 3.6$\mathrm{\Omega }$ is connected to the other end of the wire. Determine the value of the unknown resistance

  Options:
  A) 3.2$\mathrm{\Omega }$
  B) 1.4$\mathrm{\Omega }$
  C) 3.21$\mathrm{\Omega }$
  D) 1.2$\mathrm{\Omega }$
  Show Answer
  The correct answer is D .