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 281:

  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 282:

  The electrochemical equivalent of silver is 0.0012g/C. If 36.0g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5mins, the current must be?

  Options:
  A) 6000A
  B) 100A
  C) 10A
  D) 1A
  Show Answer
  The correct answer is B .
• Question 283:

  A 45^o triangular glass prism can be used as a reflector of light because

  Options:
  A) A refraction never takes place in such a prism
  B) the angle of reflection equals the angle of incidence
  C) the refractive index of glass is less than 1
  D) it is transparent
  E) the critival angle angle for glass is less than 45^o
  Show Answer
  The correct answer is E .
• Question 284:

  How much net work is required to accelerate a 1200 kg car from 10$m{s}^{-1}$ to 15$m{s}^{-1}$

  Options:
  A) 1.95×${10}^{5}j$
  B) 1.35×${10}^{4}j$
  C) 7.5×${10}^{4}j$
  D) 6.0×${10}^{4}j$
  Show Answer
  The correct answer is C .
• Question 285: One of the following readings represents the measurement of the length of a metal rod using vernier callipers, Taking the reading accuracy into consideration, the most likely one is Options:
  A) 5.15cm
  B) 5.165cm
  C) 5.0cm
  D) 5.160cm
  E) 5cm
  Show Answer
  The correct answer is A .
• Question 286:

  A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?

  Options:
  A) 4mm
  B) 2mm
  C) 0.25mm
  D) 0.12mm
  Show Answer
  The correct answer is B .
• Question 287:

  

  Three cells each of e.m.f 1.5 V and internal resistance 2.5Ω are connected as shown in the diagram above. Find the net e.m.f and the internal resistance

  Options:
  A) 1.5V, 7.50Ω
  B) 1,5V, 0.83Ω
  C) 4.5V, 7.50Ω
  D) 4.5V, 0.83Ω
  Show Answer
  The correct answer is B .
• Question 288:

  A man on a bench will exert the greatest pressure on the bench when he

  Options:
  A) lies flat on his back
  B) lies flat on his belly
  C) stands on both feet
  D) stands on the toes of one foot
  Show Answer
  The correct answer is D .
• Question 289: Steam from boiling water causes more damage on the skin than does boiling water because Options:
  A) water has a high specific heat
  B) steam has latent heat of fusion
  C) the steam is at a highter temperature than the water
  D) steam brings heat more easily by convection
  Show Answer
  The correct answer is C .
• Question 290: 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 .