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 1: The terminal voltage of a battery is 4.0V when supplying a current of 2.0A, and 2.0V when supplying a current of 3.0A. The internal resistance of the battery is Options:
  A) 0.5 $\mathrm{\Omega }$
  B) 1.0$\mathrm{\Omega }$
  C) 2.0$\mathrm{\Omega }$
  D) 4.0$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 2:

  A metal rod has a length of 100cm at 200${}^{o}C$. At what temperature will its length be 99.4cm. If the linear expansivity of the material of the rod is 2 $\times$ 10${}^{-5}{C}^{-1}$

  Options:
  A) 200${}^o$C
  B) 300${}^o$C
  C) 100${}^o$C
  D) -100${}^o$C
  Show Answer
  The correct answer is D .
• Question 3: The area under a force-distance graph represents Options:
  A) acceleration
  B) velocity
  C) power
  D) work
  E) momentum
  Show Answer
  The correct answer is D .
• Question 4: A liquid-in-glass thermometer should quickly register temperature changes. This is achieved by choosing a liquid that Options:
  A) is opaque
  B) has high density
  C) has regular expansion
  D) has a high thermal conductivity
  E) can wet glass
  Show Answer
  The correct answer is D .
• Question 5: A lens of focal length 12.0cm forms an upright image three times the size of a real object. The distance between the object and the images is Options:
  A) 8.0cm
  B) 16.0cm
  C) 24.0cm
  D) 32.0cm
  Show Answer
  The correct answer is D .
• Question 6: A spring of force constant 1500Nm^-1 is acted upon by a constant force of 75N. Calculate the potential energy stored in the string Options:
  A) 1.9J
  B) 2.8J
  C) 3.45J
  D) 0.43J
  Show Answer
  The correct answer is A .
• Question 7: In homes, electrical appliances and lamps are connected in parallel because Options:
  A) Parallel connections do not heat up the wires
  B) series connections use high voltage
  C) less current will be used
  D) less voltage will be used
  Show Answer
  The correct answer is C .
• Question 8:

  118.8cm² surface of the copper cathode of a voltameter is to be coated with 10^-6m thick copper of density 9 x 10³kgm^-3. How long will the process run with 10A constant current?

  [3.3 x 10^-7kgC^-1]

  Options:
  A) 5.4 min
  B) 10.8 min
  C) 15.0 min
  D) 20.0 min
  Show Answer
  The correct answer is A .
• Question 9:

  A hydrometer is an instrument formeasuring the

  Options:
  A) a depth of water of water in a vessel
  B) relative density of a liquid by the method of flotation
  C) relative density of a liquid by finding the apparent loss in weight
  D) relative humidity of the air
  Show Answer
  The correct answer is B .
• Question 10:

  

  A body is acted upon by forces applied at points P and Q as shown above their resultant is equal to

  Options:
  A) 2√5N in adirection N 56° E
  B) 2√5N in adirection N 56° W
  C) 2√13N in adirection N 56◦ E
  D) 2√13N in adirection N 56° W
  E) √10N in adirection N 56° E
  Show Answer
  The correct answer is C .