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 861: The particle that is responsible for the nuclear fission in a nuclear reactor is Options:
  A) neutron
  B) prton
  C) electron
  D) photon
  Show Answer
  The correct answer is A .
• Question 862: Calculate the amount of heat required to convert 2kg of ice at 2^oC to water at 0^oC. [specific heat capacity of ice = 2090Jkg^-1oC^-1, specific latent heat of fusion of ice = 333kJkg^-1] Options:
  A) 666J
  B) 8360J
  C) 666 000J
  D) 674 360J
  Show Answer
  The correct answer is D .
• Question 863: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 864: Which of the following statements about friction is NOT correct? Options:
  A) The force of kinetic friction is less than the force of static friction
  B) The force of kinetic friction between two surfaces is independent of the areas in contact provided the normal reaction is unchanged
  C) The force of rolling friction between two surfaces is less than the force of sliding friction
  D) The angle of friction is the angle between the normal reaction and the force of friction
  E) Friction may be reduced by lubriction
  Show Answer
  The correct answer is A .
• Question 865: Vibration in a stretched spring cannot be polarized because they are Options:
  A) stationary waves
  B) transverse waves
  C) longitudinal waves
  D) mechanical waves
  Show Answer
  The correct answer is D .
• Question 866:

  If it takes 5.0 hrs to drain a container of 540.0cm³ of water, what is the flow rate of water from the container in kg^-1? [Density of water = 1000kgm^-3]

  Options:
  A) 32.5kg^-1 s
  B) 31.5kg^-1 s
  C) 30.8kg^-1 s
  D) 30.0kg^-1 s
  Show Answer
  The correct answer is D .
• Question 867: A radioactive sample initially contains N atoms. After three half-lives the number of atoms that have disintegrated is Options:
  A) $\frac{N}{8}$
  B) $\frac{3N}{8}$
  C) $\frac{5N}{8}$
  D) $\frac{7N}{8}$
  Show Answer
  The correct answer is A .
• Question 868: The net movement of solvent molecules from a region of high solvent potential to a region of lower solvent potential through a partially or semi permeable membrane is refer to as Options:
  A) Diffusion
  B) Osmosis
  C) Surface tension
  D) Cohesion
  Show Answer
  The correct answer is B .
• Question 869: When the tension in a sonometer wire is doubled, the ratio of the new frequency to the initial frequency is Options:
  A) $\frac{1}{\sqrt{2}}$
  B) $\frac{1}{2}$
  C) $\sqrt{2}$
  D) 2
  Show Answer
  The correct answer is C .
• Question 870: A perfect emitter or absorber of radiant energy is a Options:
  A) conductor
  B) black body
  C) white body
  D) red body
  Show Answer
  The correct answer is B .