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 191: The vibration of an air column produces the sound in the Options:
  A) piano
  B) guiter
  C) flute
  D) school handbell
  Show Answer
  The correct answer is C .
• Question 192:

  The vapour pressure?

  Options:
  A) increases non-linearly with measuring temperature
  B) increases linearly with increasing temperature
  C) decreases linearly with increasing temperature
  D) decreases non-linearly ith measuring temperature
  Show Answer
  The correct answer is A .
• Question 193: A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is? Options:
  A) R < r
  B) R = r
  C) R = 2r
  D) R > r
  Show Answer
  The correct answer is B .
• Question 194: What is the least possible error encountered when taking measurement with a meter rule? Options:
  A) 0.1mm
  B) 1.0mm
  C) 0.5mm
  D) 0.2mm
  Show Answer
  The correct answer is C .
• Question 195:

  

  The resultant capacitance in the figure above is

  Options:
  A) 15.0µF
  B) 9.8µF
  C) 1.3µF
  D) 0.8µF
  Show Answer
  The correct answer is D .
• Question 196: A gas has a volume of 100cm³ at 27^oC. If it is heated to temperature T until a final volume of 120cm³ is attained, calculate T Options:
  A) 33^oC
  B) 60^oC
  C) 87^oC
  D) 114^oC
  Show Answer
  The correct answer is C .
• Question 197: Which of the following statements are true of the law of universal gravitation? Options:
  A) any two bodies attract each other with a force which is proportional to the difference of their masses
  B) any two bodies attract each other with a force which is inversely proportional to the square of the distance between them
  C) any two bodies attract each other with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them
  D) any two bodies attract each other with a force which is proportional to the square of the distance between them
  E) any two bodies attract each other with a force which is proportional to the sum of their masses
  Show Answer
  The correct answer is C .
• Question 198:

  Which of the following conditions are necessary and sufficient for total internal reflection to take place at the boundary between two optical media?

  I. Light is passing from optical denser medium to optically less dense medium

  II. Light is passing from optically less dense medium to optically denser medium

  III. Angle of incidence is greater than a certain critical value

  IV. Angle of incidence is lesser than a certain critical value

  Options:
  A) I and II only
  B) II only III only
  C) III and IV only
  D) I and III only
  Show Answer
  The correct answer is D .
• Question 199: An object placed 10cm from a concave mirror of focal length 5cm would have its image Options:
  A) at the centre of convature
  B) at the radius of curvature
  C) at infinity
  D) 10 cm from the focus
  Show Answer
  The correct answer is A .
• Question 200: A certain radioisotope of ${}_{92}^{235}U$ emits four alpha particles and three beta particles. The mass number and the atomic number of the resulting elements respectively are Options:
  A) 219 and 87
  B) 84 and 223
  C) 223 and 87
  D) 219 and 81
  Show Answer
  The correct answer is A .