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 201: 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 202: Calculate the position of an object placed in front of a convex mirror having focal length of 12 cm such that an image is formed 6 cm away from the mirror Options:
  A) 4. 0 cm
  B) 3. 0 cm
  C) 12.0 cm
  D) 9.0 cm
  Show Answer
  The correct answer is C .
• Question 203: Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the Options:
  A) breaking point
  B) elastic limit
  C) plastic limit
  D) stress limit
  E) yield point
  Show Answer
  The correct answer is B .
• Question 204: If the maximum voltage across a 100ohms resistor is 20V, then the maximum power it can dissipate is Options:
  A) 5.00W
  B) 4.00W
  C) 2.00W
  D) 25W
  Show Answer
  The correct answer is B .
• Question 205: A 20kg mass is to be pulled up a slope inclined at 30^o to the horizontal. If the efficiency of the plane is 75%, the force required to pull the load up the plane is [g = 10ms^-2] Options:
  A) 13.3N
  B) 73.5N
  C) 133.3N
  D) 53.2N
  Show Answer
  The correct answer is C .
• Question 206: Which of the following surfaces will absorbs radiant heat energy heat? Options:
  A) white
  B) red
  C) black
  D) blue
  Show Answer
  The correct answer is C .
• Question 207: Determine the distance between the consecutive antinodes XX if the wavelength is 66cm Options:
  A) 15cm
  B) 30cm
  C) 60cm
  D) 120cm
  Show Answer
  The correct answer is B .
• Question 208: The difference of potential between the terminals of cells is 2.2 volts. When a 4ohm resistor is connected across the terminals of this cells, the potential difference is 2 volts. What is the internal resistance of the cell? Options:
  A) 0.10 ohms
  B) 0.25ohms
  C) 0.40ohms
  D) 2.50ohms
  E) 4.00ohms
  Show Answer
  The correct answer is C .
• Question 209: The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the Options:
  A) angle of declination
  B) angle of depression
  C) angle of dip.
  D) latitude of the place
  E) longitude of the place
  Show Answer
  The correct answer is A .
• Question 210:

  

  The figure above shows a uniform wood of weight 200N and length 50m. It is pivoted at one end and suspended by a cord at the other end at an angle of 30 degrees to the wood. Calculate the tension in the cord if the wood is horizontal.

  Options:
  A) 10N
  B) 20N
  C) 100N
  D) 200N
  Show Answer
  The correct answer is D .