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 751: The expansion of solids can be considered a disadvantage in the Options:
  A) balance wheel of a watch
  B) fitting of wheels on rims
  C) fire alarm
  D) thermostat
  Show Answer
  The correct answer is B .
• Question 752:

  

  In the figure above, XY is of length 1m, The value of R at balance point Z is

  Options:
  A) 3.0Ω
  B) 13.3Ω
  C) 15.0Ω
  D) 30.0Ω
  Show Answer
  The correct answer is D .
• Question 753: A gramophone record takes 5s to reach its constant angular velocity of 4$\pi$ rads^-1 from rest. Find its constant angular acceleration. Options:
  A) 0.4$\pi$ rads^-2
  B) 0.8$\pi$ rads^-2
  C) 1.3$\pi$ rads^-2
  D) 20.0$\pi$ rads^-2
  Show Answer
  The correct answer is B .
• Question 754: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 755: In a reverse biased junction diode, current flows in by Options:
  A) positive holes alone
  B) majority carriers
  C) electron alone
  D) minority carriers
  Show Answer
  The correct answer is D .
• Question 756: The pitch of an acoustic device can be increased by Options:
  A) increasing the frequency
  B) increasing the amplitude
  C) decreasing the loudness
  D) decreasing the intensity
  Show Answer
  The correct answer is A .
• Question 757: In the normal use of a simple microscope, a person sees an Options:
  A) erect, real and magnified image
  B) erect, virtual and magnified image
  C) inverted, virtual and magnified image
  D) inverted, real and magnified image
  E) inverted and real image the same size as the object
  Show Answer
  The correct answer is B .
• Question 758: 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 759: Which of the following is a desirable property of a fuse Wire? Options:
  A) High expansively
  B) High thermal conductivity
  C) Low density
  D) Low electrical resistivity
  E) Low melting point
  Show Answer
  The correct answer is D .
• Question 760: An electric heater with a p.d of 240 V connected across its terminals has a total resistance of 960Ω. find the power rating of the heater. Options:
  A) 0.25 W
  B) 4.00 W
  C) 38.40W
  D) 60.00W
  Show Answer
  The correct answer is D .