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 1581: In a meter bridge experiment, two resistor 2$\mathrm{\Omega }$ and 3$\mathrm{\Omega }$ occupy the left and right gaps respectively. Find the balance point from the left side of the bridge Options:
  A) 20cm
  B) 40cm
  C) 60cm
  D) 80cm
  Show Answer
  The correct answer is B .
• Question 1582: In free fall, a body of mass 1kg drops from a height of 125m from rest in 5s. How long will it take another body of mass 2kg to fall from rest from the same height? [g = 10ms^-1·] Options:
  A) 5s
  B) 10s
  C) 12s
  D) 15s
  Show Answer
  The correct answer is A .
• Question 1583: A solid weights 5.0 N in air, 4.2 N in water and 4.4 N in liquid Y. Calculate the relative density of liquid Y. Options:
  A) 0.75
  B) 0.88
  C) 0.95
  D) 1.13
  E) 1.33
  Show Answer
  The correct answer is A .
• Question 1584: What must be the distance between an object and a converging lens of focal length 20cm to produce an erect image two times the object height? Options:
  A) 20cm
  B) 15cm
  C) 10cm
  D) 5cm
  Show Answer
  The correct answer is C .
• Question 1585: A zinc has a heat capacity of 40 J/K, what is the mass of the zinc, given that the specific heat of zinc is 380 J/kg k Options:
  A) 0.11kg
  B) 0.12kg
  C) 0.13kg
  D) 0.14kg
  Show Answer
  The correct answer is A .
• Question 1586:

  Shadows and eclipses result from the

  Options:
  A) refraction of light
  B) reflection of light
  C) defraction of light
  D) rectilinear propagation of light
  Show Answer
  The correct answer is D .
• Question 1587: A ball of mass 0.1kg moving with velocity of 20ms^-1 is hit by a force which acts on it for 0.02s. If the ball moves off in the opposite direction with a velocity of 25ms^-1 , calculate the magnitude of the force. Options:
  A) 25N
  B) 100N
  C) 125N
  D) 225N
  E) 250N
  Show Answer
  The correct answer is D .
• Question 1588: Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to a 1.3 x 10³Hz oscillator. Options:
  A) 39.0$\mathrm{\Omega }$
  B) 122.5$\mathrm{\Omega }$
  C) 245.0$\mathrm{\Omega }$
  D) 39000.0$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 1589: A cell of emf 1.5V is connected in series with a 1Ω resistor and a current of 0.3A flows through the resistor. Find the internal resistance of the cell Options:
  A) 4.0Ω
  B) 3.0Ω
  C) 1.5Ω
  D) 1.0Ω
  Show Answer
  The correct answer is A .
• Question 1590: An alternating current with a frequency of 100HZ has a period of Options:
  A) 0.03sec
  B) 0.01sec
  C) 0.04sec
  D) 0.15sec
  Show Answer
  The correct answer is B .