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 1161: What is the difference in the amount of heat given out by 4kg of steam and 4kg of water when both are cooled from 100^oC to 80^oC? [the specific latent heat of steam is 2,260,000Jkg^-1, specific heat capacity of water is 4200Jkg^-1K^-1] Options:
  A) 4200J
  B) 2,260,OOOJ
  C) 9,040,000J
  D) 9,380,000J
  Show Answer
  The correct answer is C .
• Question 1162: Which type of motion do the wheels of a moving car undergo? Options:
  A) Vibratory and translational motion
  B) Random and translational motion
  C) Rotational mand oscillatory motion
  D) Translational and rotational motion
  Show Answer
  The correct answer is D .
• Question 1163: Which of the following pairs of light rays show the widest separation in the spectrum of white light Options:
  A) Blue and red
  B) Green and yellow
  C) Indigo and violet
  D) Orange and red
  Show Answer
  The correct answer is A .
• Question 1164: A gas at a pressure of 10⁵Nm^-2expands from 0.6m^-3 to 1.2m³ at constant temperature, the work done is Options:
  A) 7.0 x 10⁶J
  B) 6.0 x 10 ⁶J
  C) 6.0 x 10 ⁵J
  D) 6.0 x 10 ⁴J
  Show Answer
  The correct answer is D .
• Question 1165: A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is? Options:
  A) R < r
  B) R = r
  C) R = 2r
  D) R > r
  Show Answer
  The correct answer is B .
• Question 1166: When white light is dispersed by a spectrometer, the component having the shortest wavelength is Options:
  A) orange
  B) green
  C) violet
  D) red
  Show Answer
  The correct answer is C .
• Question 1167:

  

  The figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is

  Options:
  A) 20^o
  B) 18^o
  C) 35^o
  D) 25^o
  Show Answer
  The correct answer is D .
• Question 1168: If the partial pressure of water vapour at 27°C is 18 mm Hg and the saturated vapour pressure of the atmosphere at the same temperature is 24 mm Hg, the relative humidity at this temperature is? Options:
  A) 25%
  B) 33%
  C) 75%
  D) 82%
  Show Answer
  The correct answer is C .
• Question 1169: Which of the following statements is applicable to a real image formed by a concave mirror? i. it can be observed on a screen ii. it is always inverted and in front of the mirror iii. it only seams to exist IV. it is formed by the actual converging of rays of light Options:
  A) i, ii and iii
  B) i, ii and iv only
  C) i and ii only
  D) i and ii only
  E) all four statements
  Show Answer
  The correct answer is B .
• Question 1170: An object of height 4cm is placed in front of a cuboid pinhole camera of size 6 cm. if the image formed is 2 cm high, how far is the object from the pinhole? Options:
  A) 3.0 cm
  B) 8.0 cm
  C) 12.0 cm
  D) 16.0 cm
  Show Answer
  The correct answer is C .