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 1291: Which of the following can be used to reduce local action in a Laclanche cell? Options:
  A) A carbon rod as the positive pole
  B) Pure zinc as the negative pole
  C) Potassium permanganate solution in contact with the positive pole
  D) common salt solution
  Show Answer
  The correct answer is C .
• Question 1292:

  The velocities of light in air and glass are 3.0 x 10${}^8$ms${}^{-1}$ and 2.0 x 10${}^8$ms${}^{-1}$ respectively. If the angle of refraction is 30º, the sine of the angle of incidence is?

  Options:
  A) 0.33
  B) 0.50
  C) 0.67
  D) 0.75
  Show Answer
  The correct answer is D .
• Question 1293: Convex mirror are used as driving mirrors because images formed are? Options:
  A) erect, virtual and diminished
  B) erect, real and diminished
  C) erect, virtual and magnified
  D) inverted virtual and diminished
  Show Answer
  The correct answer is A .
• Question 1294: Which is a stringed Instrument? Options:
  A) drum
  B) flute
  C) piano
  D) saxophone
  E) trumpet
  Show Answer
  The correct answer is C .
• Question 1295: Radio carrier waves are generated by causing electrons to oscillate rapidly in Options:
  A) a microphone
  B) a television camera
  C) an antenna
  D) coaxial cables
  E) a transmitter
  Show Answer
  The correct answer is E .
• Question 1296:
  

  The diagram above illustrates the penetrating power of some types of radiation. X, Y and Z are likely

  Options:
  A) X = α-particle; Y = γ-ray; Z = β-particle
  B) X = α-particle; Y = β-particle; Z = γ-ray
  C) X = γ-ray; Y = α-particle; Z = β-particle
  D) X = β-particle; Y = γ-ray; Z = α-particle
  Show Answer
  The correct answer is C .
• Question 1297:

  

  What is the average velocity of the sprinter whose velocity time graph is as shown above

  Options:
  A) 85.0ms^-1
  B) 17.0ms^-1
  C) 8.0ms^-1
  D) 1.7ms^-1
  Show Answer
  The correct answer is C .
• Question 1298: A 90cm uniform lever has a load of 30N suspended at 15cm from one of its ends. If the fulcrum is at the center of gravity, the force that must be applied at its other end to keep it in horizontal equilibrium is Options:
  A) 15N
  B) 20N
  C) 30N
  D) 60N
  Show Answer
  The correct answer is B .
• Question 1299: The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 150Hz? Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is A .
• Question 1300: When a resistance R is across a cell, the voltage across the terminals of the cell is reduced to two-third of its normal value. The internal resistance of the cell is Options:
  A) $\frac{2}{1}$R
  B) $\frac{1}{2}$R
  C) $\frac{3}{2}$R
  D) 5R
  Show Answer
  The correct answer is B .