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 31: The motion of the prongs of a sounding turning fork is Options:
  A) circular
  B) oscillatory
  C) random
  D) rotational
  E) translational
  Show Answer
  The correct answer is B .
• Question 32: An object 8cm in front of a plane mirror moves at a speed of 6cm s^-1 away from the mirror. What will be the distance separating the object and the image after 2s? Options:
  A) 8cm
  B) 12cm
  C) 20cm
  D) 28cm
  E) 40cm
  Show Answer
  The correct answer is E .
• Question 33: The main function of the commutator in a simple d.c. motor is to Options:
  A) enable the armature to rotate freely
  B) increase the flux linking the armature windings
  C) maintain a direct current in the armature
  D) provide uniform magnetic field around the armature
  E) reverse the direction of the current in the armature.
  Show Answer
  The correct answer is E .
• Question 34: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
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  The correct answer is D .
• Question 35:

  Aluminium is sometimes used as the leaf of an electroscope because it

  Options:
  A) is a light material
  B) is a good conductor
  C) is a good insulator
  D) can be converted into thin sheets
  Show Answer
  The correct answer is D .
• Question 36: When the temperature difference between the wet and dry bulbs of a hygrometer is high, this indicates that Options:
  A) it is about to rain
  B) the relative humidity is high
  C) there is plenty of sunshine
  D) the relative humidity is low
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  The correct answer is D .
• Question 37: The electromagnetic wave that can produce a heating effect on the environment is Options:
  A) x -rays
  B) ultraviolet rays
  C) infrared rays
  D) gamma rays
  Show Answer
  The correct answer is B .
• Question 38: How many grams of water at 17^oC must be added to 42g of ice at 0^oC to melt the ice completely? [specific latent heat of fusion of ice = 3.4 x 10⁵Jkg^-1, specific heat capacity of water = 4200Jkg^-1k^-1] Options:
  A) 200g
  B) 300g
  C) 320g
  D) 400g
  Show Answer
  The correct answer is A .
• Question 39: To keep a lorry moving at a constant speed v, requires power p, from the engine. The force provided by the engine is Options:
  A) $\frac{1}{2}$v
  B) pv
  C) $\frac{p}{v}$
  D) pv²
  E) $\frac{p}{v^2}$
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  The correct answer is C .
• Question 40: A metal of volume 40 cm³ is heated from 30 °c to 90 °c, the increase in volume is Options:
  A) 0.12 cm³
  B) 4.00 cm³
  C) 1.20 cm³
  D) 0.40 cm³
  E) no correct option
  Show Answer
  The correct answer is E .