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 1951: The current in a reverse-biased junction is due to? Options:
  A) minority carriers
  B) electrons
  C) majority carriers
  D) holes
  Show Answer
  The correct answer is A .
• Question 1952: Two forces whose resultant is 100N, are at right angle to each other. If one of them makes an angle 30^o with the resultant, determine its magnitude. Options:
  A) 8.66N
  B) 50.0N
  C) 57.7N
  D) 86.6N
  Show Answer
  The correct answer is D .
• Question 1953:

  An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?

  Options:
  A) 3 days
  B) 2 days
  C) 1 day
  D) 4 days
  Show Answer
  The correct answer is B .
• Question 1954: Which of the following materials has an increase in resistance with temperature? Options:
  A) water
  B) metals
  C) wood
  D) electrolyte
  Show Answer
  The correct answer is B .
• Question 1955: Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high Options:
  A) 10 cm
  B) 16 cm
  C) 5 cm
  D) 14 cm
  Show Answer
  The correct answer is D .
• Question 1956:

  How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?

  Options:
  A) 7.2 kJ
  B) 4.6 kJ
  C) 6.8 kJ
  D) 8.4 kJ
  Show Answer
  The correct answer is A .
• Question 1957: In sunlight, a blue flower looks blue because we see the flower by the light it Options:
  A) recieves from our eye
  B) disperses
  C) absorbs
  D) refracts
  E) reflects
  Show Answer
  The correct answer is E .
• Question 1958:

  

  A uniform bean HK of length 10m and weighing 200N is supported at both ends as shown above. A man weighing 1000N stands at a point P on the beam. If the reactions at point H an K respectively are 800N and 400N, Then the distance HP is

  Options:
  A) 4m
  B) 3.5m
  C) 3m
  D) $6\frac{2}{3}$m
  E) 7m
  Show Answer
  The correct answer is C .
• Question 1959: A closed coil of wire is placed near a magnet. The magnet lies along the axis of the coil. Under which of the following conditions would there be no current in the coil? Options:
  A) When the coil is moved toward the stationary magnet
  B) When the coil is moved away from the stationary magnet
  C) when the coil is held stationary but the magnet is moved towards the coil
  D) when both the coil and the magnet are held stationary
  E) when the coil is held stationary but the magnet is moved away from the cell
  Show Answer
  The correct answer is D .
• Question 1960:

  

  In the diagram above, if each of the resistors can dissipate a maximum of 18W without becoming excessively heated, what is the maximum power the circuit can dissipate?

  Options:
  A) 27W
  B) 18W
  C) 9W
  D) 5W
  Show Answer
  The correct answer is A .