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: if ∆x is the uncertainty in the measurement of the position of a particle along the x-axis and ∆P_x is the uncertainty in the measurement of the linear momentum along the x-axis, then the uncertainty principle relation is given as Options:
  A) ∆x ∆P_x ≥ h
  B) ∆x ∆P_x = 0
  C) ∆x ∆P_x< h
  D) ∆x ∆P_x = ∞
  Show Answer
  The correct answer is A .
• Question 2002: In a wheel and axle mechanism the diameters of the wheel and axle are 40cm and 8cm respectively. Given that the machine is 80% efficient, what effort is required to lift a load of 100N? Options:
  A) 20N
  B) 25N
  C) 50N
  D) 80N
  Show Answer
  The correct answer is B .
• Question 2003:

  Two bodies have masses in the ratio3:1. They experience forces whichimpart to them,acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced

  Options:
  A) 1:4
  B) 2:1
  C) 2:3
  D) 2:5
  Show Answer
  The correct answer is C .
• Question 2004:

  

  In a given circuit, the cell P has an emf 1.5V and an unknown internal resistance while cell Q has an emf 2.0V and an internal resistance of 1 ohm if the ammeter reads 50m A, Then r is equal to

  Options:
  A) 0.5 ohm
  B) 0.62 ohm
  C) 1.0 ohm
  D) 2.0 ohm
  E) 3.0 ohm
  Show Answer
  The correct answer is D .
• Question 2005: The mass of a stone is 15.0g when completely immersed in water and 10.0g when completely immersed in a liquid of relative density 2.0. The mass of the stone in air is Options:
  A) 5.0g
  B) 12.0g
  C) 20.0g
  D) 25.0g
  Show Answer
  The correct answer is C .
• Question 2006: A man walks 8km north and then 5km in a direction 60^o east of north. Find the distance from his starting point Options:
  A) 11.36km
  B) 12.36km
  C) 13.00km
  D) 14.36km
  Show Answer
  The correct answer is A .
• Question 2007: If NEPA charges 5k per kWhr, what is the cost of operating for 24 hours a lamp required 1A on a 200v line? Options:
  A) 24k
  B) 55k
  C) 40k
  D) 26k
  E) 32k
  Show Answer
  The correct answer is A .
• Question 2008: The phenomenon that makes sound persist when its source has been removed is known as Options:
  A) acoustic vibration
  B) rarefaction
  C) echo
  D) reverberation
  Show Answer
  The correct answer is D .
• Question 2009: A particle of mass M which is at rest splits up into two. If the mass and velocity of one of the particles are m and v respectively, calculate the velocity of the second particle Options:
  A) $\frac{mv}{M}$
  B) $\frac{Mv}{M-m}$
  C) $\frac{mv}{M+m}$
  D) $\frac{mv}{M-m}$
  Show Answer
  The correct answer is D .
• Question 2010:

  A gas at a volume of V${}_0$ in a container at pressure p${}_0$ 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) $\frac{p_0}{5}$
  B) $\frac{4p_0}{5}$
  C) p${}_0$
  D) 5P${}_0$
  Show Answer
  The correct answer is D .