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 2431: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 2432:

  The momentum of a car moving at a constant speed in a circular track

  Options:
  A) can be both positive and negative
  B) can be zero depending on its position in the track
  C) can be zero depending on its position in the track
  D) a centrifugal
  Show Answer
  The correct answer is C .
• Question 2433: When a transformer has more secondary windings than primary windings, it Options:
  A) has a smaller secondary current
  B) has a greater power output
  C) is a step-down transformer
  D) increases the total energy output
  Show Answer
  The correct answer is C .
• Question 2434: The linear expansivity of brass is 2 x 10^-5C^-1. If the volume of a piece of brass is 15.00cm³ at 0⁰C, What is the volume at 100^oC? Options:
  A) 16.03cm³
  B) 16.00cm³
  C) 15.09cm³
  D) 15cm³
  Show Answer
  The correct answer is C .
• Question 2435: What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42? Options:
  A) 21^o
  B) 22^o
  C) 23^o
  D) 24^o
  Show Answer
  The correct answer is D .
• Question 2436: What part of the camera corresponds to the iris of the eye? Options:
  A) diaphragm
  B) film
  C) focusing ring
  D) lens
  E) shutter
  Show Answer
  The correct answer is A .
• Question 2437: An electron of charge 1.6 x 10^-19C and mass 9.1 x 10^-31kg is accelerated between two metal plates with a velocity of 4 x 10⁷ms^-1, the potential difference between the plates is Options:
  A) 4.55 x 10³V
  B) 4.55 x 10²V
  C) 9.10 x 10¹V
  D) 4.55 x 10¹V
  Show Answer
  The correct answer is A .
• Question 2438: 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 2439: Light of energy 5eV falls on a metal of work function 3eV and electrons are liberated. The stopping potential is Options:
  A) 1.7V
  B) 2.0V
  C) 8.0V
  D) 15.0V
  Show Answer
  The correct answer is B .
• Question 2440: Two forces of magnitudes 7N and 3N act at right angles to each other. The angle $\theta$ between the resultant and the 7N force is given by Options:
  A) cos$\theta$ = $\frac{3}{7}$
  B) sin$\theta$ = $\frac{3}{7}$
  C) tan$\theta$ = $\frac{3}{7}$
  D) cot$\theta$ = $\frac{3}{7}$
  Show Answer
  The correct answer is C .