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 381: Calculate the time taken for a mango fruit that fall from the tree 20 m to the ground [g = 10 ms^-2] Options:
  A) 10s
  B) 5s
  C) 4s
  D) 2s
  Show Answer
  The correct answer is D .
• Question 382: A machine has a velocity ratio of 4. if it requires 800 N to overcome a load of 1600 N,what is the efficiency of the machine? Options:
  A) 60%
  B) 50%
  C) 40%
  D) 2%
  Show Answer
  The correct answer is B .
• Question 383: If a mango fruit dropped at a height of 50 meters. How long does it reach the ground? (take g = 10m/s²) Options:
  A) 2 sec
  B) 3 sec
  C) 4sec
  D) 3.2sec
  Show Answer
  The correct answer is D .
• Question 384: If the angle between two vector P and Q is O^o, the vectors are said to Options:
  A) intersect at the angle 45^o
  B) intersect at the angle 60^o
  C) be parallel
  D) be perpendicular
  Show Answer
  The correct answer is C .
• Question 385:

  A uniform rod PQ of length 1m and mass 2kg is pivoted at the end p. If load of 14N is placed at the center of the rod, find the force that should be applied vertically upwards at Q to maintain the rod at equilibrium horizontally [g = 10ms^-2]

  Options:
  A) 68N
  B) 28N
  C) 17N
  D) 7N
  Show Answer
  The correct answer is C .
• Question 386: Which of the following instruments has a pure tone? Options:
  A) guitar
  B) vibrating strings
  C) tuning fork
  D) siren
  Show Answer
  The correct answer is C .
• Question 387:

  A progressive wave equation is represented by y = a sin(150 πt - πx/4). if the phase difference of a progressive wave is 45°, the value of x in the equation is

  Options:
  A) 3 cm
  B) 4 cm
  C) 1 cm
  D) 2 cm
  Show Answer
  The correct answer is C .
• Question 388:

  

  The figure above shows the heights of two liquids X and Y when some air is sucked out of the apparatus through the pump P. The diameter of the table in X is twice That of the Tube In Y. What is the relative density of the liquid X with respect to liquid Y

  Options:
  A) 1/3
  B) 2/3
  C) 3
  D) 6
  Show Answer
  The correct answer is C .
• Question 389: When an alternating current given by I = 10sin (120π)t passes through a 12Ω resistor, the power dissipated in the resistor is Options:
  A) 1200W
  B) 600W
  C) 120W
  D) 30W
  Show Answer
  The correct answer is A .
• Question 390:

  

  For what value of 6 are the forces in the diagram above in equilib4ruim

  Options:
  A) ${15}^{\circ }$
  B) ${30}^{\circ }$
  C) ${45}^{\circ }$
  D) ${60}^{\circ }$
  Show Answer
  The correct answer is D .