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 2001: A wire of length 100cm and cross-sectional area 2.0 × 10^-3cm² has a resistance of 0.10 ω. Calculate its electrical conductively. Options:
  A) 2.0 × 10-6 ω^-1cm^-1
  B) 5.0 × 10-5 ω^-1cm^-1
  C) 2.0 × 106 ω^-1cm^-1
  D) 5.0 × 106 ω^-1cm^-1
  E) 5.0 × 107 ω^-1cm^-1
  Show Answer
  The correct answer is B .
• Question 2002: Calculate the specific latent heat of vaporization of steam of 1.13 x 106J pf heat energy is required to convert 15kg of it to water. Options:
  A) 7.53 x 105 Jkg${}^{-1}$
  B) 7.53 x 10-2Jkg${}^{-1}$
  C) 7.53 x 104Jkg${}^{-1}$
  D) 7.53 x 10-3Jkg${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 2003: In a semi conductor junction diode, as the depletion or barrier layer is forward-biased, the layer Options:
  A) widens
  B) narrows
  C) remains constant
  D) widens then narrows
  Show Answer
  The correct answer is C .
• Question 2004: When a positively charged rod is brought nearer the cap of a positively charged electroscope, the leaves divergence will Options:
  A) be induced
  B) converge
  C) diverge
  D) remain constant
  Show Answer
  The correct answer is C .
• Question 2005:

  A piece of radioactive material contains 10²⁰ atoms.

  If the half life of the material is 20 seconds, the number of disintegration in the first second is

  Options:
  A) 3.47 x 10¹⁸
  B) 6.93 x 10 ²⁰
  C) 3.47 x 10²⁰
  D) 6.93 x 10¹⁸
  Show Answer
  The correct answer is A .
• Question 2006: 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 2007: The surfaces of conveyor belts are made rough so as to Options:
  A) protect them while carrying loads
  B) prevent the loads from slipping
  C) enable them to carry more load
  D) make them stronger
  Show Answer
  The correct answer is B .
• Question 2008:

  Which of the following conclusion(s) can be drawn from Newton’s second law of motion? Force is proportional toI. the product of mass and acceleration

  II. the product of mass and velocity

  III. Impulse

  Options:
  A) I only
  B) II only
  C) III only
  D) II and III only
  E) I, II and III
  Show Answer
  The correct answer is E .
• Question 2009: A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5 ms^-1. find the coefficient of friction between the road and the tyres. Options:
  A) 25.00
  B) 2.50
  C) 0.50
  D) 0.25
  Show Answer
  The correct answer is D .
• Question 2010: Which of the following is not a mechanical wave? Options:
  A) wave in closed pipe
  B) radio waves
  C) water waves
  D) sound waves
  Show Answer
  The correct answer is B .