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 951: How many grams of water at 17^oC must be added to 42g of ice at 0^oC to melt the ice completely? [specific latent heat of fusion of ice = 3.4 x 10⁵Jkg^-1, specific heat capacity of water = 4200Jkg^-1k^-1] Options:
  A) 200g
  B) 300g
  C) 320g
  D) 400g
  Show Answer
  The correct answer is A .
• Question 952:

  A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has

  Options:
  A) no charge and a zero potential
  B) a positive charge and a zero potential
  C) a negative charge and a positive potential
  D) a negative charge and a negative potential
  Show Answer
  The correct answer is D .
• Question 953: A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is Options:
  A) 0.4eV
  B) 2.5eV
  C) 3.0eV
  D) 7.0eV
  Show Answer
  The correct answer is C .
• Question 954:

  

  In the figure above, the work done by the force of 100N inclined at an angle of 60^o to the object dragged horizontally to a distance of 8m is

  Options:
  A) 800J
  B) 600J
  C) 100J
  D) 400J
  Show Answer
  The correct answer is D .
• Question 955: When temperature of a liquid increases, its surface tension Options:
  A) Decreases
  B) Increases
  C) Remain Constant
  D) Increases then decreases
  Show Answer
  The correct answer is A .
• Question 956: Which of the following can conduct electricity owing to the presence of free mobile electrons? Options:
  A) germanium
  B) silicon
  C) grapefruit
  D) copper
  Show Answer
  The correct answer is D .
• Question 957:

  

  An electrical circuit is connected up as shown above, which of the following is correct about the value of current flowing through the 1 ohm resistance?

  Options:
  A) 12/13A
  B) 13/12A
  C) 1/3A
  D) 3A
  E) 12/7A
  Show Answer
  The correct answer is D .
• Question 958:

  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 959: The percentage of the original nuclei of the sample of a radioactive substance left after 5 half - lives is Options:
  A) 8%
  B) 5%
  C) 3%
  D) 1%
  Show Answer
  The correct answer is C .
• Question 960: The phenomenon where by the water droplets in the atmosphere combines with dust particles in the air to reduce visibility is Options:
  A) cloud
  B) mist
  C) hail
  D) fog
  Show Answer
  The correct answer is D .