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 331: If relative density of a metal is 19, what will be the mass of 20cm³ of the metal when immersed in water? Options:
  A) 380g
  B) 400g
  C) 360g
  D) 39g
  E) 180g
  Show Answer
  The correct answer is A .
• Question 332: A particle starts from rest and moves with a constant acceleration of 0.5ms^-2. The distance covered by the particle in 10s is Options:
  A) 2.5m
  B) 5.0m
  C) 25.0m
  D) 50.0m
  Show Answer
  The correct answer is C .
• Question 333: What is the equivalent of 20K in Celsius scale? Options:
  A) 20^oC
  B) 293^oC
  C) 68^oC
  D) 36^oC
  Show Answer
  The correct answer is B .
• Question 334: If the refractive index of a medium in air is 2.0, what is the critical angle for this medium? Options:
  A) 30^o
  B) 42^o
  C) 45^o
  D) 50^o
  Show Answer
  The correct answer is A .
• Question 335: A magnetic field is said to exist at a point if a force is Options:
  A) exerted on a stationary charge at the point
  B) exerted on a moving charge at the point
  C) deflected at the point
  D) strengthened at the point
  Show Answer
  The correct answer is B .
• Question 336: Two images Y and X are formed by a plane mirror and a convex mirror respectively. Which of the following is correct about their characteristics? Options:
  A) Both are inverted
  B) The magnification of Y is greater than one while that of X is one
  C) The magnification of Y is one while that of X is less than one
  D) Y is inverted while X is erect
  E) Y is real while X is virtual.
  Show Answer
  The correct answer is C .
• Question 337:

  I. Diameter of a small ball bearing.

  II. Thickness of a pieces of paper.

  III. Diameter of a measuring cylinder.

  IV. Length of a piece of wire.

  Which of the above can be measured using a micrometer screw gauge?

  Options:
  A) I, II and IV only .
  B) I and II only
  C) II and III only
  D) III and IV only
  Show Answer
  The correct answer is B .
• Question 338:

  A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?

  Options:
  A) the magnet is moved towards the stationary solenoid
  B) there is no relative motion
  C) the magnet is moved away from the stationary solenoid
  D) the solenoid is moved away from the stationary magnet
  Show Answer
  The correct answer is B .
• Question 339:

  

  The diagram above shows a maximum and minimum thermometer divided into three portions P, Q and R. Which of the following is true about the respective content of P,Q and R

  Options:
  A) Alcohol, mercury and alcohol
  B) Air, alcohol and mercury
  C) Mercury, alcohol and mercury
  D) Air, mercury and alcohol
  Show Answer
  The correct answer is A .
• Question 340:

  A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms${}^{-1}$ from the top of a tower 10m high. Neglecting air resistance, its total energyjust before hitting the ground is? (Take g = 10ms${}^{-2}$)

  Options:
  A) 5J
  B) 10J
  C) 15J
  D) 20J
  Show Answer
  The correct answer is C .