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 1481: Two capacitance of 6$\mu$F and 8$\mu$F are connected in series. What additional capacitance must be connected in series with this combination to give a total of 3$\mu$F Options:
  A) 3$\mu$F
  B) 16$\mu$F
  C) 24$\mu$F
  D) 30$\mu$F
  Show Answer
  The correct answer is C .
• Question 1482: If a projectile has maximum range of 36m, find the speed of projection (Take g = 9.8m/s²) Options:
  A) 27m/s²
  B) 2m/s²
  C) 4m/s²
  D) 7m/s²
  Show Answer
  The correct answer is A .
• Question 1483: The temperature at which the water vapour present in the air is just sufficient to saturate it is called the Options:
  A) ice point
  B) boiling point
  C) steam point
  D) dew point
  E) saturation point
  Show Answer
  The correct answer is D .
• Question 1484: When 100g of liquids L₁ at 78^oC was mixed with Xg of liquid L₂ at 50^oC, the final temperature was 60^oC. Given that the specific heat capacity of L₂is half that of L₁, find x Options:
  A) 50g
  B) 100g
  C) 150g
  D) 200g
  Show Answer
  The correct answer is C .
• Question 1485: What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42? Options:
  A) 21^o
  B) 22^o
  C) 23^o
  D) 24^o
  Show Answer
  The correct answer is D .
• Question 1486: An empty 60 litre petrol tank has a mass of 10kg. Its mass when full of fuel of relative density 0.72 is Options:
  A) 7.2kg
  B) 33.2kg
  C) 43.2kg
  D) 53.2kg
  Show Answer
  The correct answer is D .
• Question 1487: When cold water is poured on a can containing hot water, the can collapses because the Options:
  A) steam condeses and occupies the partial vacuum in the can
  B) external air pressure counter balances the pressure within the can
  C) steam expands to occupy the vacuum remaining in the can
  D) external pressure becomes greater than the pressure within the can.
  Show Answer
  The correct answer is D .
• Question 1488: Which of the following statements are true about the spring balance and the chemical balance? i. both are used to measure the mass of an object. ii. either of them may be used to measure the weight of an object. iii. the spring balance works on the principle of Hooke's law while the chemical balance works on the principle of moments. iv. a change in gravity does the readings of a spring balance but not that of a chemical balance. Options:
  A) i, and iv
  B) ii and iii
  C) ii and iv
  D) i, ii and iii
  E) i and iii
  Show Answer
  The correct answer is C .
• Question 1489: A bead traveling on a straight wire is brought to rest at 0.2m by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1 determine the work done by the friction Options:
  A) $2\times {10}^{-4}J$
  B) $2\times {10}^{-3}J$
  C) $2\times {10}^{1}J$
  D) $2\times {10}^{2}J$
  Show Answer
  The correct answer is B .
• Question 1490: If the linear magnification of the objective and eyepiece convex lenses of a compound microscope are 4 and 7 respectively. Calculate the angular magnification of the microscope Options:
  A) 2
  B) 3
  C) 11
  D) 28
  Show Answer
  The correct answer is D .