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: The specific heat of a substance in the solid state is C₁; its specific beat in the liquid state is C₂ and its latent heat of fusion is L. If a mass M of the substance is changed from the solid state at temperature T, to the liquid state, also at temperature T, the amount of heat required will be Options:
  A) M(C₁ ÷ C₂) x T
  B) ML
  C) L
  D) M(C₁ + C₂) × T ÷ ML
  E) ML(C₁ + C₂ ÷ 2) × T
  Show Answer
  The correct answer is B .
• Question 2:

  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 3:

  Which of the following is/are the limitations to the Rutherford's atomic models?

  I. It is applicable when energy is radiated as electrons are revolving

  II. It is applicable when energy is radiated in a continuous mode

  III. It is applicable to an atom with only one electron in the other shell

  Options:
  A) I only
  B) II only
  C) I and II only
  D) I, II and III only
  Show Answer
  The correct answer is C .
• Question 4: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 5: Which of the following pairs of light rays shows the widest separation in the spectrum of white light? Options:
  A) Yellow and red
  B) Orange and green
  C) Violet and blue
  D) Blue and green
  E) Red and indigo
  Show Answer
  The correct answer is E .
• Question 6: An ice cube floats in a glass of water filled to the brim. What happens when the ice melts? Options:
  A) The water level remains the same
  B) there is a drop in the level of water in the glass due to condensation on its outside
  C) the water in the glass overflows
  D) the level of water drops because melted ice occupies less volume
  E) none of the above is correct
  Show Answer
  The correct answer is A .
• Question 7: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 8: Which of the following units is equivalent to kgms^-1? Options:
  A) Ns^-1
  B) Nms^-1
  C) Ns
  D) Js^-1
  Show Answer
  The correct answer is C .
• Question 9: A constant force of magnitude F acts on an object of mass 0.04kg initially at rest at a point O. if the speed of the object when it has moved 50m from O is 500ms^-1, what is the value of F? Options:
  A) 0.4N
  B) 100.0N
  C) 250.0N
  D) 1000.0N
  Show Answer
  The correct answer is B .
• Question 10:

  

  From the diagram above, if the potential difference across the resistor, capacitor and inductor are 80 v, 110 v, 40 v respectively, the effective potential difference is

  Options:
  A) 116.3 V
  B) 50.0 V
  C) 230.0 V
  D) 106.3 V
  Show Answer
  The correct answer is D .