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 981:

  A turning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube, at what maximum height will resonance occur.

  [speed of sound in air = 340ms^-1]

  Options:
  A) 0.95m
  B) 0.60m
  C) 0.50m
  D) 0.45m
  Show Answer
  The correct answer is D .
• Question 982: Which of the following electromagnetic waves is least energetic? Options:
  A) Infra-red rays
  B) X-rays
  C) Ultra-violet rays
  D) Gamma rays
  Show Answer
  The correct answer is A .
• Question 983: The magnetic effect of a current-carrying coil is NOT utilized in the making of a/an Options:
  A) carbon microphone
  B) electric bells
  C) magnetic relay
  D) telephone earpiece
  E) thermostat
  Show Answer
  The correct answer is E .
• Question 984: I. MeltingII. Boiling III. RefractionIV. ConductionWhich combination of the above is evident of the molecular nature of matter? Options:
  A) II , III and IV only
  B) I ,II and IV only
  C) I , III and IV only
  D) I , II and III only
  Show Answer
  The correct answer is B .
• Question 985: The temperature at which the water vapour present in the air is just sufficient to saturate it is called the Options:
  A) ice point
  B) boiling point
  C) steam point
  D) dew point
  E) saturation point
  Show Answer
  The correct answer is D .
• Question 986:

  An alternating current can induce voltage because it has

  Options:
  A) ripple value
  B) varying magnetic field
  C) weaker magnetic field than direct current
  D) high peak value
  Show Answer
  The correct answer is B .
• Question 987: Which type of radiation does not NOT originate within the nucleus? Options:
  A) alpha
  B) beta
  C) gamma
  D) neutron
  E) x-rays
  Show Answer
  The correct answer is E .
• Question 988:

  

  In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V will respectively be

  Options:
  A) south and north
  B) north and south
  C) north and north
  D) south and south
  Show Answer
  The correct answer is C .
• Question 989: The inside of a vacuum flask is usually coated with silver to reduce heat lost by Options:
  A) convection
  B) conduction
  C) radiation
  D) absorption
  E) evaporation
  Show Answer
  The correct answer is C .
• Question 990: Which of the following correctly describes the energy changes in the generation of light by a hydroelectric power station? Options:
  A) Electrical $\to$ mechanical $\to$ potential
  B) potential $\to$mechanical $\to$electrical $\to$ light
  C) mechanical $\to$ sound $\to$ electrical $\to$ light
  D) kinetic $\to$ mechanical $\to$ electrical $\to$light
  Show Answer
  The correct answer is B .