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 211: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 212: If the magnification of a virtual image formed of an object 10cm from a convex lens is 3, then the focal length of the lens is Options:
  A) 10cm
  B) 15cm
  C) 16cm
  D) 19cm
  E) 20cm
  Show Answer
  The correct answer is B .
• Question 213: A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply. The reactance of the inductor is Options:
  A) 200 Ω
  B) 50 Ω
  C) 100/π Ω
  D) 25/π Ω
  Show Answer
  The correct answer is A .
• Question 214: Which of the following statements is NOT correct? Options:
  A) Molecules of a liquid are stationary
  B) Brownian motion is an evidence of particle nature of matter
  C) Matter is made up of molecules
  D) The molecules of matter are in constant motion
  Show Answer
  The correct answer is A .
• Question 215:

  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 216: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 217:

  I. Coherence
  II. Same frequency
  III. Same wavelength
  IV. Same Intensity

  Which of the conditions above are necessary to produce interference fringes?

  Options:
  A) I and III
  B) I, II and IV
  C) I, II and III
  D) II and III
  Show Answer
  The correct answer is C .
• Question 218:

  

  In the Fig above, MN is a light uniform meter rule pivoted at O, the 80cm mark. A load of mass 3.0 kg is suspended on the meter rule at L, the 10cm mark. If the rule is kept in equilibrium by a string RP, fixed at P and attached to the rule at R, the 20cm mark, then the Tension T on the string is

  Options:
  A) 30N
  B) 34N
  C) 35N
  D) 60N
  E) 70N
  Show Answer
  The correct answer is E .
• Question 219:

  A man walks 1km due east and then 1 km due north. His displacement is

  Options:
  A) √2km N 45°E
  B) 1km N 30°E
  C) 1km N 15°E
  D) √2km N 60°E
  Show Answer
  The correct answer is A .
• Question 220:

  A 1000kg elevator is descending vertically with an acceleration of 1.0ms^-2, if the acceleration due to gravity is 10ms^-2, the tension in the suspending cable is

  Options:
  A) 1.0N
  B) 10.0N
  C) 9000.0N
  D) 11000N
  Show Answer
  The correct answer is C .