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 1011: A band of 500 rectangular loops of wire of area 20 cm by 20 cm, encloses a region of magnetic field which charges from 1.0T to 0.4T within 5 seconds, calculate the induced e.m.f. Options:
  A) 5.60 v
  B) 24.00 v
  C) 0.24 v
  D) 2.40 v
  Show Answer
  The correct answer is D .
• Question 1012:

  

  Two mirrors of the same length are arranged as shown above, a ray of light NO strikes the system at O and emerges along PQ. The emergent ray has been deviated through

  Options:
  A) 220 degrees
  B) 200 degrees
  C) 210 degrees
  D) 180 degrees
  E) 230 degrees
  Show Answer
  The correct answer is D .
• Question 1013:
  

  In the figure, the value of R is

  Options:
  A) 3$\mathrm{\Omega }$
  B) 6$\mathrm{\Omega }$
  C) 4$\mathrm{\Omega }$
  D) 5$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 1014: A pool of water appears to be 1.0m deep when viewed vertically from above. If the refractive index of water is 1.33, what is the actual depth of the pool? Options:
  A) 0.750m
  B) 1.013m
  C) 1.330m
  D) 13.3000m
  Show Answer
  The correct answer is C .
• Question 1015: In a good thermos flask, the main cause of heat loss is? Options:
  A) conduction through the cork
  B) the plastic base of the thermos flask
  C) the silvered walls and shiny metals
  D) the outer cover or jacker
  Show Answer
  The correct answer is A .
• Question 1016: In a wheel and axle mechanism the diameters of the wheel and axle are 40cm and 8cm respectively. Given that the machine is 80% efficient, what effort is required to lift a load of 100N? Options:
  A) 20N
  B) 25N
  C) 50N
  D) 80N
  Show Answer
  The correct answer is B .
• Question 1017: the ray which causes gas molecules to glow is known as Options:
  A) cathode ray
  B) anode ray
  C) molecular ray
  D) gamma ray
  Show Answer
  The correct answer is A .
• Question 1018: A moving coil galvanometer has a full-scale deflection of 3A equivalent to 30^o deflection. The sensitivity of the instrument is Options:
  A) 33.0
  B) 0.1
  C) 90.0
  D) 10.0
  Show Answer
  The correct answer is D .
• Question 1019: The heat required to raise a mass of a substance through 1K is known as Options:
  A) Specific heat capacity
  B) Specific latent heat of vaporization
  C) Capacity latent heat of fusion
  D) Heat capacity
  Show Answer
  The correct answer is D .
• Question 1020: A herdsman yelling out to fellow herdsman heard his voice reflected by cliff 4s later. What is the velocity of sound in air if the cliff is 680m away? Options:
  A) 170ms^-1
  B) 136ms^-1
  C) 340ms^-1
  D) 680ms^-1
  E) 510ms^-1
  Show Answer
  The correct answer is C .