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 1131: A wave has a frequency of 2Hz and a wavelength of 30cm. The velocity of the wave is Options:
  A) 60.0ms^-1
  B) 6.0ms^-1
  C) 1.5ms^-1
  D) 0.6ms^-1
  Show Answer
  The correct answer is D .
• Question 1132: Which of the following statements supports the assumption that light travels in straight lines? Options:
  A) light can be diffracted
  B) a source of light produces distinct shadows of opaque objects
  C) a source of light produces interference patterns on a suitably placed screen
  D) light can be reflected
  Show Answer
  The correct answer is B .
• Question 1133: A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is Options:
  A) Fs cos θ
  B) Fs cosec θ
  C) Fs sec θ
  D) Fs sin θ
  E) Fs tan θ
  Show Answer
  The correct answer is A .
• Question 1134: A hot metal ball is suspended in the open air. As it cools it loses heat by Options:
  A) conduction only
  B) convection only
  C) radiation only
  D) conduction and convection
  E) convection and evaporation
  Show Answer
  The correct answer is B .
• Question 1135: The electromotive force obtained from a simple dynamo may be increased by Options:
  A) increasing the cross-sectional area of the coil
  B) winding the coil on a soft-iron armature so as to decrease the magnetic flux through the coil
  C) increasing the speed of rotation
  D) making the field magnet longer
  E) using low-resistance copper coils
  Show Answer
  The correct answer is C .
• Question 1136:

  The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the Jack is 75/π %, calculate the mechanical advantage.

  Options:
  A) 400
  B) 300
  C) 200
  D) 150
  Show Answer
  The correct answer is C .
• Question 1137:

  

  In the figure above, a lever of length 200m is used to lift a load of mass 180kg. The pivot at P is 20m from the load. what minimum force F must be applied at the end of the lever [g = 10ms^-2]

  Options:
  A) 9N
  B) 18N
  C) 20N
  D) 200N
  Show Answer
  The correct answer is D .
• Question 1138: Counting of currency notes with moist fingers is based on the principles of? Options:
  A) diffusion
  B) cohesion
  C) adhesion
  D) viscosity
  Show Answer
  The correct answer is C .
• Question 1139: A radio is operated by eight cells each of e.m.f. 2.0V connected in series. If two of the cells are wrongly connected, the net e.m.f. of the radio is Options:
  A) 8V
  B) 10V
  C) 12V
  D) 16V
  Show Answer
  The correct answer is C .
• Question 1140: Which of the following statements is CORRECT? Options:
  A) charges generated on glass rubbed with silk are called negative
  B) charges in various media can be carried by protons detached from their atom
  C) the magnitude of any charge is a multiple of the charge of an electron
  D) the intensity of an electric field is a scalar quantity
  E) if 500 joules of work are required to move a 2-coulomb charge between two points, the potential difference between the two point is 100V
  Show Answer
  The correct answer is C .