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 2711:

  The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?

  Options:
  A) concave mirror of focal length 5cm
  B) concave mirror of focal length 10cm
  C) convex mirror of focal length 5cm
  D) convex mirror of focal length 10cm
  Show Answer
  The correct answer is C .
• Question 2712: Two liquids, P at a temperature of 20^oC and Q at a temperature of 80^oC have specific heat capacities of 1.0Jkg^-1oC^-1 and 1.5J kg^-1oC^-1respectively. if equal masses of P and Q are mixed in a lagged calorimeter, then the equilibrium temperature is Options:
  A) 44^oC
  B) 50^oC
  C) 56^oC
  D) 60^oC
  E) 70^oC
  Show Answer
  The correct answer is C .
• Question 2713: At what frequency would a 10H inductor have a reactance of 2000Ω? Options:
  A) π/200Hz
  B) π/100Hz
  C) 100/πHz
  D) 100πHz
  Show Answer
  The correct answer is C .
• Question 2714:

  

  The wave motion above has a frequency

  Options:
  A) 0.1Hz
  B) 0.2Hz
  C) 5Hz
  D) 10Hz
  E) 100Hz
  Show Answer
  The correct answer is C .
• Question 2715: Transverse waves can be distinguished from longitudinal waves using the characteristic of Options:
  A) diffraction
  B) refraction
  C) polarization
  D) reflection
  Show Answer
  The correct answer is C .
• Question 2716: 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 2717: In a compound microscope, the objective and the eye piece focal lengths are Options:
  A) At infinity
  B) Long
  C) Short
  D) The same
  Show Answer
  The correct answer is C .
• Question 2718: In which of the following material media will sound travel fastest? Options:
  A) oil
  B) metal
  C) gas
  D) water
  Show Answer
  The correct answer is B .
• Question 2719: Which statement is a correct consequence of the uncertainly principle? Options:
  A) A particle’s kinetic energy cannot be measured accurately at any time
  B) Both momemtum and energy of a particle can be known with absolute certainly
  C) It is possible to measure exactly both the position and momentum of a particle at the same time
  D) The complete knowledge of the position of a particle implies the complete ignorance of its energy
  E) The uncertainty in our knowledge of energy and the duration taken to measure it, are each less than Planck’s constant.
  Show Answer
  The correct answer is A .
• Question 2720:

  

  A uniform bean HK of length 10m and weighing 200N is supported at both ends as shown above. A man weighing 1000N stands at a point P on the beam. If the reactions at point H an K respectively are 800N and 400N, Then the distance HP is

  Options:
  A) 4m
  B) 3.5m
  C) 3m
  D) $6\frac{2}{3}$m
  E) 7m
  Show Answer
  The correct answer is C .