Physics 2018 Past Questions | JAMB

Study the following Physics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

31. The process whereby a liquid turns spontaneously into vapour is called

  • A. regelation
  • B. evaporation
  • C. boiling
  • D. sublimation

32. The differences observed in solids, liquids and gases may be accounted for by

  • A. their relative masses
  • B. their melting points
  • C. the spacing and forces acting between the molecules
  • D. the different molecules in each of them

33. Convex mirrors are used as driving mirrors because images formed are

  • A. erect, Virtual and diminished
  • B. erect, real and diminished
  • C. erect, virtual and magnified
  • D. inverted, virtual and diminished

34. Musical instruments playing the same note can be distinguished from one another owing to the difference in their

  • A. quality
  • B. pitch
  • C. intensity
  • D. loudness

35. PHYSICS 2018 JAMB

In the diagram shown, If the south-poles of two magnets stroke a steel bar, the polarities at T and V will respectively be

  • A. north and south
  • B. south and south
  • C. north and north
  • D. south and north
 

36. In homes, electrical appliances and lamps are connected in parallel because

  • A. less current will be used
  • B. less voltage will be used
  • C. parallel connection does not heat up the wires
  • D. series connection uses high voltage

37.  An object moves in a circular path of radius 0.5m with a speed of 1ms\(^{-1}\). What is its angular velocity?

    • A. 8rads\(^{-1}\)
    • B. 4rads\(^{-1}\)
    • C. 1rads\(^{-1}\)
    • D. 2rads\(^{-1}\)

38. What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  • A. 100N
  • B. 90N
  • C. 80N
  • D. 120N

39.

Calculate the effective capacitance of the circuit in the diagram given

  • A. 4μf
  • B. 3μf
  • C. 2μf
  • D. 1μf

40.Which of the following diagrams represents correctly an n-p-n transistor?

i. physics past question

ii.physics past question

iii. physics past question

  • A. i
  • B. ii
  • C. iii
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