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 1201: A heating coil rated 1000 W is used to boil off completely 2 kg of boiling water. the time required to boil of the water is_______[Special latent heat of Vaporization of water = 2.3 x 10⁶ Jkg^-1] Options:
  A) 1.15 x 10⁴s
  B) 1.15 x 10³s
  C) 4.6 x 10⁴s
  D) 4.6 x 10³s
  Show Answer
  The correct answer is D .
• Question 1202: Which of the following will be applied when a metal Y is used to electroplate another metal X in electrolysis? Options:
  A) X is the anode and very high current is used
  B) X is the anode and Y is the cathode
  C) Y is the cathode and X is the anode
  D) Y is the anode and very high current is used
  Show Answer
  The correct answer is D .
• Question 1203: The electrochemical equivalent of platinum is 5.0 x 10^-7kgC^-1 to plate-out 1.0kg of platinum, a current of 100A must be passed through an appropriate vessel for Options:
  A) 5.6 hours
  B) 56 hours
  C) 1.4 x 10^{4 hours}
  D) 2.0 x 10^{4 hours}
  Show Answer
  The correct answer is A .
• Question 1204: A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill? Options:
  A) 528m
  B) 66m
  C) 136m
  D) 264m
  Show Answer
  The correct answer is C .
• Question 1205:

  A source of sound produces waves in air of wavelength1.65m. If the speed of soundin air is 330ms${}^{-1}$, the period of vibration in air is?

  Options:
  A) 200
  B) 0.005
  C) 0.5
  D) 0.02
  Show Answer
  The correct answer is B .
• Question 1206: If a heavy barrel is rolled up a plane inclined at 30° to the horizontal. its velocity ratio will be Options:
  A) 3.0
  B) 3.1
  C) 3.2
  D) 2.0
  Show Answer
  The correct answer is D .
• Question 1207: The spectrum of white light consists of coloured lights arranged in the following order Options:
  A) blue, red, green, yellow, indigo, violet, orange
  B) red, orange, yellow, green, blue, indigo, violet
  C) red, orange, yellow, indigo, green, blue, violet
  D) indigo, green, blue, violet, yellow, red, orange
  E) yellow, blue, green, violet, orange, indigo, red
  Show Answer
  The correct answer is B .
• Question 1208: The atmospheric pressure due to water is 1.3 x 10⁶Nm^-2. What is the total pressure at the bottom of an ocean 10m deep? [Density of water = 1000kgm^-3, g = 10ms^-2] Options:
  A) 1.3 x 10⁷Nm^-2
  B) 1.4 x 10⁶Nm^-2
  C) 1.4 x 10⁵Nm^-2
  D) 1.0 x 10 ⁵Nm^-2
  Show Answer
  The correct answer is B .
• Question 1209: An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15 cm, what is the object distance? Options:
  A) 10 cm
  B) 25 cm
  C) 16 cm
  D) 14 cm
  Show Answer
  The correct answer is A .
• Question 1210: In comparing the camera and the human eye, the film of the camera function as the Options:
  A) retina
  B) iris
  C) cornea
  D) pupil
  Show Answer
  The correct answer is A .