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 181: A spectrum of sunlight is said to be impure when Options:
  A) it is made of only three colours
  B) it has no red colour in it
  C) the different colours in it overlap
  D) it does not contain white light
  Show Answer
  The correct answer is C .
• Question 182: Heat is supplied to a test tube containing 100g of ice at its melting point. The ice melts completely in 1 min.What is the power rating of the source of heat? [Latent heat of fusion of ice = 336Jg^-1] Options:
  A) 336W
  B) 450W
  C) 560W
  D) 600W
  Show Answer
  The correct answer is C .
• Question 183: Find the work done in moving a 2 C charge between two points X and Y in an electric field if the potential difference is 100 volts Options:
  A) 50J
  B) 100J
  C) 200J
  D) 400J
  Show Answer
  The correct answer is C .
• Question 184: The equation of transverse wave traveling along a string is given by Y = 0.3 sin(0.5x - 50t) where Y and X are in cm and t is in seconds.Find the maximum displacement of the particles from the equilibrium position Options:
  A) 50.0cm
  B) 2.5 cm
  C) 0.5cm
  D) 0.3cm
  Show Answer
  The correct answer is D .
• Question 185: The extension in a spring when 5g wt was hung from it was 0.56cm. If Hooke's law is obeyed, What is the extension caused by a load of 20g wt? Options:
  A) 1.12m
  B) 2.14cm
  C) 2.52cm
  D) 2.80cm
  E) 2.24cm
  Show Answer
  The correct answer is E .
• Question 186:

  Ripple in a power supply unit is caused by

  Options:
  A) using an alternating current source
  B) forward voltage drop
  C) heavy load
  D) using a zener diode
  Show Answer
  The correct answer is D .
• Question 187:

  If the attraction of the sun is suddenly ceased, the earth would continue to move in a straight line making a tangent with the original orbit. This statement is derived from Neutron's

  Options:
  A) First law of motion
  B) Second law of motion
  C) Third law of motion
  D) Law of universal gravitation
  Show Answer
  The correct answer is A .
• Question 188: Which of the following is a scalar quantity? Options:
  A) Tension
  B) Weight
  C) Impulse
  D) Mass
  Show Answer
  The correct answer is D .
• Question 189:

  A bar magnet is divided into two pieces, which of the following statement is correct?

  Options:
  A) two new magnets are created
  B) the magnetic field of each separate piece becomes stronger
  C) the electric field is created
  D) the bar magnet is demagnetized
  Show Answer
  The correct answer is A .
• Question 190: An empty density bottle weighs 2 N. if its weighs 5 N when filled with water and 4 N when filled with olive oil, the relative density of olive oil is Options:
  A) (1)/3
  B) (2)/3
  C) (1)/5
  D) (2)/5
  Show Answer
  The correct answer is B .