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 501:

  A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is

  Options:
  A) 400N
  B) 200N
  C) 100N
  D) 800N
  Show Answer
  The correct answer is D .
• Question 502: An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15 cm, what is the object distance? Options:
  A) 10 cm
  B) 25 cm
  C) 16 cm
  D) 14 cm
  Show Answer
  The correct answer is A .
• Question 503: Which of the following is TRUE of light and sound waves? Options:
  A) they both transmit energy
  B) they both need a mediumfor propagation
  C) they are both transverse waves
  D) their velocities in air are equal
  Show Answer
  The correct answer is A .
• Question 504:

  A lead bullet of mass 0.05kg is fired with a velocity of 200ms${}^{-1}$ into a block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is?

  Options:
  A) 50J
  B) 100J
  C) 150J
  D) 200J
  Show Answer
  The correct answer is A .
• Question 505: A capacitor of 20 x 10^-12F and an inductor are joined in series. The value of the inductance that will give the circuit a resonance frequency of 200kHz is Options:
  A) I/16 H
  B) I/8 H
  C) I/64 H
  D) I/32 H
  Show Answer
  The correct answer is D .
• Question 506: The efficiency of a machine is always less than 100% because the Options:
  A) work output is always greater than the work input
  B) load lifted is always greater than the effort applied
  C) effort applied is always greater than the load lifted
  D) velocity ratio is always greater than the mechanical advantage
  Show Answer
  The correct answer is D .
• Question 507:

  If a force of 50N stretches a wire from 20m to 20.01m, what is the amount of force required to stretch the same material from 20m to 20.05m?

  Options:
  A) 250N
  B) 200N
  C) 100N
  D) 50N
  Show Answer
  The correct answer is A .
• Question 508: A plane sound wave of frequency 85.5Hz and velocity 342ms^-1 is reflected from a vertical wall. At what distance from the wall does the wave have antinode? Options:
  A) 2m
  B) 4m
  C) 1m
  D) 3m
  Show Answer
  The correct answer is C .
• Question 509: At reasonance, the phase angle in an a.c. circuit is Options:
  A) 90°
  B) 60°
  C) 0°
  D) 180°
  Show Answer
  The correct answer is C .
• Question 510: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .