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 771: In a closed organ pipe producing a musical note, an antinode will always be produced at Options:
  A) the closed end
  B) the open end
  C) the middle
  D) all the parts of the pipe
  Show Answer
  The correct answer is B .
• Question 772: A cone in an unstable equilibrium has its potential energy Options:
  A) decreased
  B) increased
  C) unchanged
  D) oscillating
  Show Answer
  The correct answer is B .
• Question 773: the property that is propagated in a traveling wave is Options:
  A) frequency
  B) amplitude
  C) energy
  D) wave lenght
  Show Answer
  The correct answer is C .
• Question 774:

  An alternating current can induce voltage because it has

  Options:
  A) ripple value
  B) varying magnetic field
  C) weaker magnetic field than direct current
  D) high peak value
  Show Answer
  The correct answer is B .
• Question 775: A palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g = 10ms^-2) Options:
  A) 9s
  B) 4.5s
  C) 6s
  D) 7.5s
  E) 3s
  Show Answer
  The correct answer is E .
• Question 776: Calculate the angle of minimum deviation for a ray which is refracted through an equiangular prism of refractive index 1.4 Options:
  A) 60⁰
  B) 29⁰
  C) 99⁰
  D) 90⁰
  Show Answer
  The correct answer is B .
• Question 777: If a container is filled with ice to the brim, what happens to the level of water when the ice completely melts? Options:
  A) the level of water goes up
  B) the water in the glass outflows
  C) the level of water remains unchanged
  D) the level of water drops
  Show Answer
  The correct answer is D .
• Question 778:

  Aluminium is sometimes used as the leaf of an electroscope because it

  Options:
  A) is a light material
  B) is a good conductor
  C) is a good insulator
  D) can be converted into thin sheets
  Show Answer
  The correct answer is D .
• Question 779: The electrical properties of germanium can be altered drastically by the addition of impurity. This process is referred to as Options:
  A) saturation
  B) bonding
  C) amplification
  D) dopping
  Show Answer
  The correct answer is D .
• Question 780: Two bodies have masses in the ratio 3:1. They experience forces which impart to them acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced. Options:
  A) 1 : 4
  B) 2 : 1
  C) 2 : 3
  D) 2 : 5
  Show Answer
  The correct answer is C .