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 1021: The pitch of an acoustic device can be increased by Options:
  A) increasing the frequency
  B) increasing the amplitude
  C) decreasing the loudness
  D) decreasing the intensity
  Show Answer
  The correct answer is A .
• Question 1022: Which of the following devices are used to measure pressure? i. Aneroid barometer. ii. hydrometer. iii. hygrometer. iv. manometer. Options:
  A) i and iii
  B) ii and iii
  C) iii and iv
  D) i and iv
  Show Answer
  The correct answer is D .
• Question 1023: To produce an enlarged and erect image with a concave mirror,the object must be positioned Options:
  A) at the principal focus
  B) beyond the centre of curvature
  C) between the principal focus and the centre of the curvature
  D) between the principal focus and the pole
  Show Answer
  The correct answer is D .
• Question 1024: A rod of length 10cm is heated through 100^oC and its final length is 10.26cm. What is the co-efficient of linear expansion of the rod? Options:
  A) 0.026 per degree centigrade
  B) 0.00026 per degree centigrade
  C) 0.26 per degree centigrade
  D) 1.0026 per degree centigrade
  E) 0.0026 per degree centigrade
  Show Answer
  The correct answer is B .
• Question 1025: The function of a 5-A fuse included in a circuit supplying a household refrigerator with power is to keep the Options:
  A) Temperature of the refrigerator low and constant
  B) keep current supplied to the refrigerator below 5A
  C) Voltage supply constant
  D) Current supplies to the refrigeration
  Show Answer
  The correct answer is B .
• Question 1026: When a charge moves through an electric circuit in the direction of an electric force, it Options:
  A) gains both potential and kinetic energy
  B) gains potential energy and lose kinetic energy
  C) loses potential energy and gains kinetic energy
  D) loses both potential and kinetic energy
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  The correct answer is A .
• Question 1027: Heat is supplied to a test tube containing 100g of ice at its melting point. The ice melts completely in 1 min.What is the power rating of the source of heat? [Latent heat of fusion of ice = 336Jg^-1] Options:
  A) 336W
  B) 450W
  C) 560W
  D) 600W
  Show Answer
  The correct answer is C .
• Question 1028: A ray of light makes an angle of 35^o with a plane mirror. What is the angle of reflection? Options:
  A) 35^o
  B) 55^o
  C) 70^o
  D) 65^o
  Show Answer
  The correct answer is B .
• Question 1029: The angle of deviation of light of various colours passing through a triangular prism increases in the order Options:
  A) red → green → blue
  B) green → violet → blue
  C) blue → red → green
  D) blue → green → red
  Show Answer
  The correct answer is A .
• Question 1030:

  

  Calculate the e.m.f of the cell in the above circuit if its internal resistance is negligible.

  Options:
  A) 12 V
  B) 8 V
  C) 2 V
  D) 36 V
  Show Answer
  The correct answer is B .