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 501: The amount of heat needed to raise the temperature of 10kg of copper by 1k is its Options:
  A) specific heat capacity
  B) heat capacity
  C) latent heat
  D) internal energy
  Show Answer
  The correct answer is B .
• Question 502: What is the frquency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25 s? Options:
  A) 0.01 Hz
  B) 0.04 Hz
  C) 2.27 Hz
  D) 3.60 Hz
  Show Answer
  The correct answer is D .
• Question 503: 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 504: A metal of volume 40 cm³ is heated from 30 °c to 90 °c, the increase in volume is Options:
  A) 0.12 cm³
  B) 4.00 cm³
  C) 1.20 cm³
  D) 0.40 cm³
  E) no correct option
  Show Answer
  The correct answer is E .
• Question 505:

  Which of the following does NOT describe the Image formed by a plane minor?

  Options:
  A) Erect
  B) Laterally inverted
  C) Same distance from mirror as object
  D) Magnified
  Show Answer
  The correct answer is D .
• Question 506: When impurities are added to semi-conductors, the conductivity of the semi-conductor Options:
  A) increases then decreases
  B) increases
  C) decreases
  D) remains constant
  Show Answer
  The correct answer is B .
• Question 507: In a fission process, the decrease in mass is 0.01%. How much energy could be obtained from the fission of 0.1g of the material Options:
  A) $9.0\times {10}^{9}J$
  B) $9.0\times {10}^{10}J$
  C) $6.3\times {10}^{11}J$
  D) $9.0\times {10}^{11}J$
  Show Answer
  The correct answer is A .
• Question 508: A ray of light is incident at an angle of 30^o on one top surface of a parallel-sided glass block of refractive index 1.5. The ray finally emerges from the lower surface. What is the angular deviation of the emergent ray? Options:
  A) 60^o
  B) 39^o
  C) 28^o
  D) 0^o
  Show Answer
  The correct answer is D .
• Question 509:

  

  The arrow represents an object in front of a convex mirror whose focal points are X and Y. The image formed is

  Options:
  A) between X and P
  B) Between P and Y
  C) Between Y and Z
  D) Outside W
  E) Outside Z
  Show Answer
  The correct answer is B .
• Question 510: Calculate the upthrust on an object of volume 50cm³ which is immersed in liquid of density 103kgm^-3 [g = 10ms^-2] Options:
  A) 0.8N
  B) 2.5N
  C) 0.5N
  D) 1.0N
  Show Answer
  The correct answer is C .