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 2471: A current carrying conductor experiences a force when placed in a magnetic field because the Options:
  A) conductor is magnetized
  B) magnetic field of the current interacts with external magnetic field
  C) force is due to the motor principle
  D) electric field of the current interacts with the external magnetic field
  Show Answer
  The correct answer is B .
• Question 2472: 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 2473: When an ebolite rod is rubbed with fur, it has Options:
  A) no charge at all
  B) a negative charge
  C) a positive charge
  D) negative and positive charges
  Show Answer
  The correct answer is B .
• Question 2474: 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 2475: The heat from the sun reaches the earth by the process Options:
  A) insulation
  B) precipitation
  C) conduction
  D) convection
  E) radiation
  Show Answer
  The correct answer is E .
• Question 2476: What is X in the equation given below? 42He + 94Be → 126C + X Options:
  A) electron
  B) hydrogen
  C) lithium
  D) neutron
  E) proton
  Show Answer
  The correct answer is D .
• Question 2477: A gas at a volume of V₀ in a container at pressure P₀ 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) P₀/5
  B) 4P₀/5
  C) P₀
  D) 5P₀
  Show Answer
  The correct answer is D .
• Question 2478:

  Which process is responsible for production of energy in stars?

  Options:
  A) Nuclear reaction
  B) Nuclear fission
  C) Nuclear fusion
  D) Radioactive decay
  Show Answer
  The correct answer is C .
• Question 2479: Flourescent tubes produces light by the Options:
  A) excitation of gas molecules
  B) conduction of solar energy
  C) refraction of light by gas molecules
  D) thermal agitation of electron in the tubes
  Show Answer
  The correct answer is A .
• Question 2480: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .