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 1271: 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 1272:

  Which statements(s) is/are NOT true?

  I. A saturated vapour is one that is in equilibrium with its liquid in a closed space.
  II. A vapour contains molecules with varying kinetic energy and their distances apart are smaller than those of the molecules of a liquid
  III. Relative Humidity = $\frac{\text{Saturated vapour pressure at dew point}}{\text{Saturated vapour pressure at air temperature}}$ x 100%
  IV. The saturated vapour pressure of water increases with temperature

  Options:
  A) I only
  B) II only
  C) II and III only
  D) III and IV only
  E) II, III and IV only
  Show Answer
  The correct answer is B .
• Question 1273: The compressed regions and the space-out regions in longitude wave are refers to as Options:
  A) Compression and Rarefaction
  B) Comparison and Explosion
  C) Reflection only
  D) Refraction only
  Show Answer
  The correct answer is A .
• Question 1274: Determine the focal length of a thin converging lens if the power is 5.0 dioptres Options:
  A) 0.1 m
  B) 0.2 m
  C) 2.0 m
  D) 2.5 m
  Show Answer
  The correct answer is B .
• Question 1275: If a body mass 5kg is thrown vertically upwards with velocity u,at what height will the potential energy equal to the kinetic energy? Options:
  A) h =(u)²/g
  B) h = (u)²/4g
  C) h = (2u)²/g
  D) h = (u)²/2g
  Show Answer
  The correct answer is B .
• Question 1276: If the load at the end of a sonometer wire is immersed in a bucket of water, the original fundamental frequency of the wire could be restored by Options:
  A) decrease the length of the wire
  B) increasing the length of the wire
  C) increasing the mass per unit length of the wire
  D) changing the temperature of the wire
  Show Answer
  The correct answer is B .
• Question 1277: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 1278:

  The working of the beam balance is based on the principle of

  Options:
  A) moments
  B) conservation of energy
  C) equivalence
  D) floatation
  Show Answer
  The correct answer is A .
• Question 1279: Two tuning forks of frequency 256Hz and 260Hz are sounded close to each other. What is the frequency of the beats produced? Options:
  A) 2Hz
  B) 4Hz
  C) 8Hz
  D) 258Hz
  Show Answer
  The correct answer is B .
• Question 1280: The equation P^xV^yT^z = constant Options:
  A) x = 0, y = 0, z = 1
  B) x = 1, y = 0, z = 0
  C) x = 1, y = 1, z = 0
  D) x = 1, y = 1, z = 1
  E) x = 1, y = 1, z = -1
  Show Answer
  The correct answer is E .