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 1801: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 1802:

  A parallel plate capacitor separated by an air gap is made of $0.8m^2$tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

  Take ${\epsilon }_o$ = $8.85\times {10}^{-}12F{m}^{-}1$

  Options:
  A) 3.54nC
  B) 42.5nC
  C) 35.4nC
  D) 4.25nC
  Show Answer
  The correct answer is B .
• Question 1803:

  If a light wave has a wavelength of 500nm in air what is the frequency of the wave?

  [c = 3 x 10⁸ ms^-1]

  Options:
  A) 3.0 x 10¹⁴ Hz
  B) 6.0 x 10¹⁴ Hz
  C) 6.0 x 10¹² Hz
  D) 2.5 x 10¹⁴ Hz
  Show Answer
  The correct answer is B .
• Question 1804: Which of the following is a percussion instrument? Options:
  A) bell
  B) flute
  C) guitar
  D) piano
  E) organ
  Show Answer
  The correct answer is A .
• Question 1805: What is the least possible error in using a rule graduated in centimeters? Options:
  A) 0.1cm
  B) 0.5cm
  C) 1.0cm
  D) 2.0cm
  Show Answer
  The correct answer is A .
• Question 1806: A beam of light is incident from air to water at an angle of 30^oC. Find the angle of refraction if the refractive index of water is $\frac{4}{3}$ Options:
  A) 15^oC
  B) 18^oC
  C) 22^oC
  D) 24^oC
  Show Answer
  The correct answer is C .
• Question 1807: A motor vehicle is brought to rest from a speed of 15ms^-1 in 20 seconds. Calculate the retardation. Options:
  A) 0.75ms^-1
  B) 1.33ms^-2
  C) 5.00ms^-2
  D) 7.50ms^-2
  Show Answer
  The correct answer is A .
• Question 1808: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 1809: By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens? Options:
  A) 15.0
  B) 2.5
  C) 1.5
  D) 0.4
  Show Answer
  The correct answer is B .
• Question 1810: Which of the following metals will provide the greatest shield against ionizing radiation Options:
  A) Iron
  B) Manganese
  C) Alminium
  D) Lead
  Show Answer
  The correct answer is D .