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 1091: Which of the following is NOT directly associated with direct current (DC)? Options:
  A) A dry cell
  B) a moving coil galvanometer
  C) a transformer
  D) a lead- acid accumulator
  E) a commutator
  Show Answer
  The correct answer is C .
• Question 1092:

  

  In a light experiment with a convex lens a student plotted a graph as shown above of the reciprocal of object distance (1)/u against the reciprocal of image distance (1)/v . the focal length of the lens is given as

  Options:
  A) slope of line PQ
  B) Reciprocal of either OP or OQ
  C) Length OP or OQ
  D) area under the graph E ratio OP/OQ
  Show Answer
  The correct answer is B .
• Question 1093:

  A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium

  Options:
  A) an increase in the kinetic energy of the body
  B) an increase in the potential energy of the body
  C) a decrease in the kinetic energy of the body
  D) an increase in the height of the body
  Show Answer
  The correct answer is B .
• Question 1094: When the bottom tip of a vibrating tuning fork is held in contact with a wooden box, a louder sound is heard. This phenomenon is known as Options:
  A) beats
  B) echoing
  C) resonance
  D) reverberation
  Show Answer
  The correct answer is C .
• Question 1095: The current in a reverse-biased junction is due to? Options:
  A) minority carriers
  B) electrons
  C) majority carriers
  D) holes
  Show Answer
  The correct answer is A .
• Question 1096: A copper wire was subjected to a tensile stress of 7.7 x 10⁷ x 10 Nm^-2. calculate strain of the wire.
  [young modules = 1.1 x 10¹¹ Nm^-2] Options:
  A) 2. 0 x 10^-5
  B) 7.0 x 10^-3
  C) 7.0 x 10^-4
  D) 2.2 x 10^-4
  Show Answer
  The correct answer is C .
• Question 1097: Ice cubes are added to a glass of warm water. The glass and water are cooled by Options:
  A) conduction only
  B) convection only
  C) conduction and convection
  D) convection and radiation
  Show Answer
  The correct answer is C .
• Question 1098:

  Which of the following is consistent with Charles' law?

  I. 

  II. 

  III. 

  IV. 

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is A .
• Question 1099: If the wavelength of a wave travelling with a velocity of 360ms^-1 is 60cm, the period of the wave is Options:
  A) 6s
  B) 3.6s
  C) 0.17s
  D) 0.61s
  E) 3s
  Show Answer
  The correct answer is C .
• Question 1100: If the partial pressure of water vapour at 27°C is 18 mm Hg and the saturated vapour pressure of the atmosphere at the same temperature is 24 mm Hg, the relative humidity at this temperature is? Options:
  A) 25%
  B) 33%
  C) 75%
  D) 82%
  Show Answer
  The correct answer is C .