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 1:

  A gas at a volume of V${}_0$ in a container at pressure p${}_0$ is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?

  Options:
  A) $\frac{p_0}{5}$
  B) $\frac{4p_0}{5}$
  C) p${}_0$
  D) 5P${}_0$
  Show Answer
  The correct answer is D .
• Question 2: Heat is supplied uniformly at the rate of 100W to 1.0 x 10^-2kg of a liquid for 20 seconds. If the temperature of the liquid rises by 5^oC, then the specific heat capacity of the liquid is Options:
  A) 2.0 x 10²Jkg^-1k^-1
  B) 2.0 x 10²Jkg^-1
  C) 4.0 x 10⁴Jkg^-1k^-1
  D) 4.0 x 10⁴kg^-1
  E) 8.4 x 10³Jkg^-1k^-1
  Show Answer
  The correct answer is C .
• Question 3:

  The density of 400cm³ of palm oil was 0.9gcm^-3 before frying. If the density of the oil was 0.6gcm^-3 after frying, assuming no loss of oil due to spilling, its new volume was?

  Options:
  A) 1360cm${}^3$
  B) 600cm${}^3$
  C) 240cm${}^3$
  D) 8000m${}^3$
  Show Answer
  The correct answer is B .
• Question 4: Total eclipse of the sun occurs when the Options:
  A) earth is between the moon and the sun
  B) sun is between the moon and the earth
  C) moon is between the sun and the earth
  D) ozone layer is threatened
  Show Answer
  The correct answer is C .
• Question 5: An element and its isotope only differ in the number of Options:
  A) protons
  B) electrons
  C) ions
  D) neutrons
  Show Answer
  The correct answer is D .
• Question 6:

  Gases conduct electricity under

  Options:
  A) high pressure and high voltage
  B) low pressure and low voltage
  C) normal pressure and low voltage
  D) low pressure and high voltage
  Show Answer
  The correct answer is D .
• Question 7:

  Which of the following statements are TRUE of isotopes?

  I. Isotopes of an element have the same chemical properties because they have the same number of electrons

  II. Isotopes of elements are normally separated using physical properties

  III. Isotopes of an element have the same number of protons in their nuclei

  Options:
  A) I and II only
  B) I and III only
  C) II and III only
  D) I, II and III
  Show Answer
  The correct answer is B .
• Question 8: A radio is operated by eight cells each of e.m.f. 2.0V connected in series. If two of the cells are wrongly connected, the net e.m.f. of the radio is Options:
  A) 8V
  B) 10V
  C) 12V
  D) 16V
  Show Answer
  The correct answer is C .
• Question 9:

  

  The diagram above shows three circuits, the internal resistances of the batteries are negligible. which of the currents is the largest

  Options:
  A) I₁
  B) I₂
  C) I₃
  D) I₄
  E) I₅
  Show Answer
  The correct answer is E .
• Question 10: When the length I of a piece of wire under constant tension is varied, the relationship of the frequency of the vibration f$\alpha$/ is Options:
  A) f$\alpha$/
  B) f$\alpha \frac{1}{I^2}$
  C) f $\alpha \sqrt{I}$
  D) f$\alpha \frac{1}{1}$
  Show Answer
  The correct answer is D .