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 191: The temperature at which the water vapour present in the air is just enough to saturate the air is the _______ point. Options:
  A) boiling
  B) critical
  C) dew
  D) ice
  E) steam
  Show Answer
  The correct answer is C .
• Question 192: Which of the following assumptions is made in a simple pendulum experiment? the Options:
  A) suspending string is inextensible
  B) bob has a finite size
  C) bob has a definite mass
  D) initial angle of oscillation must be large
  Show Answer
  The correct answer is A .
• Question 193: A plane inclined at an angle of 30^o to the horizontal has an efficiency of 60%. The force parallel to the plane required to push a load of 120N uniformly up the plane is Options:
  A) 60N
  B) 100N
  C) 120N
  D) 200N
  E) 240N
  Show Answer
  The correct answer is B .
• Question 194: A man 1.5m tall is standing 3m in front of a pinhole camera whose distance between the hole and the screen is 0.1m. What is the height of the image of the man on the screen? Options:
  A) 0.05m
  B) 0.15m
  C) 0.30m
  D) 1.00m
  Show Answer
  The correct answer is A .
• Question 195:

  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 196: An alternating source is connected in series to a capacitor of capacity reactance ${10}^3\sqrt{3}$ and a resistor of resistance 10³ Ohms. The Impedance of the circuit is... Options:
  A) $2000\sqrt{3}$ Ohms
  B) 2000 Ohms
  C) $1000\sqrt{3}$ Ohms
  D) 1000 Ohms
  Show Answer
  The correct answer is B .
• Question 197:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 198: It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the Options:
  A) Crompton effect
  B) de Broglie’s laws
  C) Frank-Hertz experimental law
  D) Heisenberg’s uncertainly principle
  E) wave-particle paradox
  Show Answer
  The correct answer is D .
• Question 199:

  The change in volume when 450kg of ice is completely melted is

  [density of ice = 900 kgm^-3, density of water = 100 kgm^-3]

  Options:
  A) 0.50m³
  B) 0.45m³
  C) 0.05m³
  D) 4.50m³
  Show Answer
  The correct answer is C .
• Question 200:

  A man walks 8km north and then 5km in a direction 60^o east of north. Find the distance from his starting point

  Options:
  A) 11.36km
  B) 12.36km
  C) 13.00km
  D) 14.36km
  Show Answer
  The correct answer is A .