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 771: The force of attraction between two point masses is 10^-4N when the distance between them is 0.18m. If the distance is reduced to 0.06m, calculate the force. Options:
  A) 1.1 x 10^-5N
  B) 3.3 x 10^-5N
  C) 3.0 x 10^-4N
  D) 9.0 x 10^-4N
  Show Answer
  The correct answer is D .
• Question 772:

  In which of the following device in the expansion of solid is a disadvantages?I. Simple pendulum

  II. Fire alarms

  III. Thermostat

  IV. Bimetallic thermometer

  Options:
  A) III only
  B) II & III only
  C) I only
  D) II, III & IV only
  Show Answer
  The correct answer is C .
• Question 773:

  Which of the following is a type of wave that is both mechanical and longitudinal?

  Options:
  A) Water waves
  B) Seismic waves
  C) Sound waves
  D) Light waves
  Show Answer
  The correct answer is C .
• Question 774:

  Which of the following best describes the energy changes which take place when a steam engine drives a generator which lights a lamp?

  Options:
  A) heat ----> Light----> Sound ----> Kinetic
  B) Kinetic ----> Light ----> Heat ----> Electricity
  C) heat ----> Kinetic ----> Electricity ----> Heat and Light
  D) electricity ----> Kinetic ----> Heat ----> Light
  Show Answer
  The correct answer is C .
• Question 775: A light wave of frequency 5 x 10¹⁴Hz moves through water which has a refractive index of $\frac{4}{3}$. Calculate the wavelength in water if the velocity of light in air is 3 x 10⁸ms^-1 Options:
  A) 4.5 x 10^-7m
  B) 6.0 x 10^-7m
  C) 1.7 x 10⁶m
  D) 2.2 x 10⁶m
  Show Answer
  The correct answer is A .
• Question 776: The eyeball consists of a round tough white skin called Options:
  A) Sclerotic
  B) Choroid coal
  C) Optical fiber
  D) Accommodation
  Show Answer
  The correct answer is A .
• Question 777: A liquid of mass 1.0 x 10³kg fills a rectangular tank of length 2.5m and width 2.0m. If the tank is 4m high, what is the pressure at the middle of the tank?[g = 10ms^-2] Options:
  A) 1.0 x 10⁴Nm^-2
  B) 2.0 x 10³Nm^-2
  C) 1.5 x 10³Nm^-2
  D) 1.0 x 10³Nm^-2
  Show Answer
  The correct answer is D .
• Question 778:

  Which of the following option is right if an object fall freely to the ground?1. The total energy is Kinetic

  2. The ratio of potential energy to kinetic energy is constant

  3. The sum of potential and kinetic is constant

  Options:
  A) 1 only
  B) 2 only
  C) 3 only
  D) 1 and 2 only
  Show Answer
  The correct answer is C .
• Question 779:

  The eclipse of the moon occurs when?

  Options:
  A) the moon reflects the rays from the sun to the earth
  B) the moon comes exactly between the earth and the sun
  C) the earth comes exactly between the moon and the sun
  D) the sun comes exactly between the earth and the moon
  Show Answer
  The correct answer is C .
• Question 780: A galvanometer of resistance 20$\mathrm{\Omega }$ is to be provided with a shunt that $\frac{1}{10}$ of the whole current in a circuit passes through the galvanometer. The resistance of the shunt is Options:
  A) 2.00$\mathrm{\Omega }$
  B) 2.22$\mathrm{\Omega }$
  C) 18.00$\mathrm{\Omega }$
  D) 18.22$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .