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 541: An electric kettle, connected to a 240V mains, produces 6.0 x 10⁵J of heat energy to boil a quantity of water in 5 minutes. Find the resistance of the kettle. Options:
  A) 14.4$\mathrm{\Omega }$
  B) 28.8$\mathrm{\Omega }$
  C) 144$\mathrm{\Omega }$
  D) 288$\mathrm{\Omega }$
  E) 2880$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 542: A test tube of radius 1.0cm is loaded to 8.8g. If is placed upright in water, find the depth to which it would sink Options:
  A) 2.8cm
  B) 5.2cm
  C) 25.5cm
  D) 28.0cm
  Show Answer
  The correct answer is A .
• Question 543: For a short sighted person, light rays from a point on a very distant object is focused Options:
  A) in front of the retina
  B) on the retina by a converging lens
  C) behind the retina by a diverging lens
  D) in front of the retina, a distance 2F from the lens
  Show Answer
  The correct answer is A .
• Question 544: The refractive index of liquid is 1.5. If the velocity of light in vacuum is 3.0 x 10⁸ms^-1, the velocity of light in the liquid is Options:
  A) 1.5 x 10⁸m^-1
  B) 2.0 x 10⁸m^-1
  C) 3.0 x 10⁸m^-1
  D) 4.5 x 10⁸m^-1
  E) 9.0 x 10⁸m^-1
  Show Answer
  The correct answer is B .
• Question 545:

  The statements below were made by some students describing what happened during the determination of the melting point of solids.

  I. the temperature of the solid was solid until melting started

  Ii. the temperature of the solid rose until melting started

  Iii. during melting, the temperature was rising

  Iv. during melting, the temperature was constant

  V. the temperature continued to rise after all the solid had melted

  Vi. the temperature stopped rising after all the solid had melted. Which of the following gives correct statements in the right order?

  Options:
  A) ii, iv, and v
  B) ii, iii and vi
  C) i, iii and vi
  D) i, iii and v
  E) i, iv and v
  Show Answer
  The correct answer is A .
• Question 546: A bread toaster uses a current of 4A when plugged in a 24oV line. it takes 1 minute to toast slices of bread. what is the energy consumed by the toaster Options:
  A) 5.76 x 10⁴J
  B) 1.60 x 10⁴J
  C) 3.60 x 10³J
  D) 1.60 x 10²J
  Show Answer
  The correct answer is A .
• Question 547: An ebonite rod rubbed with fur attracts a glass rod rubbed with silk because Options:
  A) ebonite has a negative charge while glass has a positive charge
  B) ebonite has a positive charge while glass has a negative charge
  C) both have negative charges
  D) both have positive charges
  Show Answer
  The correct answer is A .
• Question 548:

  The amount of heat needed to raise the temperature of 10kg of Copper by 1K is its

  Options:
  A) specific heat capacity
  B) latent heat
  C) heat capacity
  D) internal energy
  Show Answer
  The correct answer is A .
• Question 549: The accurate measurement of the relative density of substances in powder or granular form can be done using a beam balance and a Options:
  A) pipette
  B) burette
  C) measuring cylinder
  D) density
  E) bottle
  Show Answer
  The correct answer is E .
• Question 550:

  23	Na + X →	20	F +	4	He
  11		9		2

  What particle is X in the reaction above?

  Options:
  A) Alpha
  B) Beta
  C) Neurons
  D) Gamma
  Show Answer
  The correct answer is C .