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 1621: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 1622: 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 1623: 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 $\to$ light $\to$ sound $\to$ kinetic
  B) kinetic $\to$ light $\to$ heat $\to$ electricity
  C) heat $\to$ kinetic$\to$ electricity $\to$ heat $\to$ light
  D) electricity $\to$ kinetic $\to$ heat v light
  E) heat $\to$ sound $\to$ kninetic v electricity
  Show Answer
  The correct answer is C .
• Question 1624: For semi conductor to have negative temperature coefficient of resistance implies that Options:
  A) their resistance decrease with temperature
  B) The resistance increase with temperature
  C) their resistance is constantly changing with temperature
  D) they have electrons and holes at high temperature
  Show Answer
  The correct answer is A .
• Question 1625: The instrument used to view stars is the Options:
  A) Prism binoculars
  B) Telescope
  C) Film projector
  D) Microscope
  Show Answer
  The correct answer is B .
• Question 1626: 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 1627: The resultant of two forces is 50N. If the forces are perpendicular to each other and one of them makes an angle 0f 30^o with the resultant, find its magnitude. Options:
  A) 100.0N
  B) 57.7N
  C) 43.3N
  D) 25.0N
  Show Answer
  The correct answer is C .
• Question 1628: The electrolyte in the Nickei-iron (Nife) accumulator is Options:
  A) potassium hydroxide solution
  B) dilute tetraoxosulphate(VI)acid
  C) copper tetraoxosulphate(VI)solution
  D) ammonium chloride solution
  Show Answer
  The correct answer is A .
• Question 1629: Which of these expresses the relationship between the earth’s magnetic field FE, and the field’ FB due to a magnet at neutral points? FE is Options:
  A) equal and opposite to F^B
  B) equal to and in the same direction with F^B
  C) greater than and in the same direction with F_B
  D) greater than and opposite to F_B
  E) less than and opposite to F_B
  Show Answer
  The correct answer is A .
• Question 1630: A length of wire has a frequency of 255Hz when stretched by a force of b225N. If the fore increased to 324N, what is the new frequency of vibration Options:
  A) 306 Hz
  B) 512 Hz
  C) 488 Hz
  D) 356 Hz
  Show Answer
  The correct answer is A .