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 531:

  A ship travelling towards a cliff receives the echo of its whistle after 3.5 seconds. A short while later, it receives the echo after 2.5 seconds. If the speed of sound in air under the prevalling condition is 250ms-1, how much closer is the ship to the cliff?

  Options:
  A) 10m
  B) 350m
  C) 175m
  D) 125m
  Show Answer
  The correct answer is D .
• Question 532:

  In the molecular explanation, heat is transferred by the

  Options:
  A) free electrons
  B) free atoms
  C) free molecules
  D) free solids
  Show Answer
  The correct answer is A .
• Question 533: Radio waves belong to the class of wave whose velocity is about Options:
  A) 34m/s
  B) 3 ×10⁶m/s
  C) 3 ×10⁸m/s
  D) 3 × 10^-8m/s
  Show Answer
  The correct answer is C .
• Question 534: If the stress on a wire is 10⁷NM^-2 and the wire is stretched from its original length of 10.00 cm to 10.05 cm. The young's modulus of the wire is Options:
  A) 5 . 0 x 10⁴ Nm^-2
  B) 5 . 0 x 10⁵ Nm^-2
  C) 2 . 0 x 10⁸ Nm^-2
  D) 2 . 0 x 10⁹ Nm^-2
  Show Answer
  The correct answer is D .
• Question 535: What is the least possible error encountered when taking measurement with a meter rule? Options:
  A) 0.1mm
  B) 1.0mm
  C) 0.5mm
  D) 0.2mm
  Show Answer
  The correct answer is C .
• Question 536:

  I. Work done by load is always less than the work done by effort.

  II. All machines are made of levers, pulleys, screws and gear wheels.

  III. A fishing rod is a machine.

  Iv. Effort is always larger than load.

  which of statements above about machines are true?

  Options:
  A) I and III
  B) III and IV
  C) I and III
  D) II and III
  Show Answer
  The correct answer is C .
• Question 537:

  When a water droplet is placed on a freshly cut piece of wood, it spreads out to form a thin layer because the wood is

  Options:
  A) not at equilibrium with the water
  B) cohesive to water
  C) at equilibrium with the water
  D) adhesive to water
  Show Answer
  The correct answer is D .
• Question 538: To convert an alternating current dynamo into a direct current dynamo, the Options:
  A) number of turns in the coil is increased
  B) strength of the field magnet is increased
  C) slip rings are replaced with a split ring commutator
  D) coil is wound on a soft iron armature
  Show Answer
  The correct answer is C .
• Question 539:

  During the transformation of matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because

  Options:
  A) the heat energy is quickly conducted away
  B) the heat capacity has become very large as the substance melts
  C) the heat gained is equal to the heat lost by the substance
  D) all the heat is used to break the bonds holding the molecules of the solid together
  Show Answer
  The correct answer is D .
• Question 540: Calculate the force acting on an electron of charge 1.6 x 10^-19C placed in an electric field of intensity 10⁸Vm^-1 Options:
  A) 1.6 x 10^-11N
  B) 1.6 x 10^-14N
  C) 1.6 x 10^-16N
  D) 1.0 x 10^-16N
  Show Answer
  The correct answer is A .