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 11:

  The linear expansivity of brass is 2 x 10${}^{-5}$ C${}^{-1}$. If the volume of a piece of brass is 15.00cm at 0°C, what is the volume at 100°C

  Options:
  A) 16.03cm${}^3$
  B) 15.09cm${}^3$
  C) 16.00cm${}^3$
  D) 15.03cm${}^3$
  Show Answer
  The correct answer is B .
• Question 12: 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 13: A piece of wire gauze can be made to lie on water because Options:
  A) the wire guaze is less dense than water
  B) the water molecules repels the wire guaze upwards
  C) the water surface has the effect of an elastic thin skin
  D) of the cohensive forces between the water and the wire guaze molecules
  Show Answer
  The correct answer is C .
• Question 14: Which of the following can be used to reduce local action in a Laclanche cell? Options:
  A) A carbon rod as the positive pole
  B) Pure zinc as the negative pole
  C) Potassium permanganate solution in contact with the positive pole
  D) common salt solution
  Show Answer
  The correct answer is C .
• Question 15: In a nuclear fusion experiment, the loss of mass amounts to 1.0 x 10^-6kg. The amount of energy obtained from the fusion is Options:
  A) 3.0 x 10^-4J
  B) 3.0 x 10^-1J
  C) 9.0 x 10⁴J
  D) 9.0 x 10¹⁰J
  Show Answer
  The correct answer is D .
• Question 16: When the tension in a sonometer wire is doubled, the ratio of the new frequency to the initial frequency is Options:
  A) $\frac{1}{\sqrt{2}}$
  B) $\frac{1}{2}$
  C) $\sqrt{2}$
  D) 2
  Show Answer
  The correct answer is C .
• Question 17:

  Which of the following readings cannot be determined with a meter rule?

  Options:
  A) 2.56cm
  B) 2.25cm
  C) 2.50cm
  D) 2.05cm
  Show Answer
  The correct answer is A .
• Question 18: Three electric cells each of e.m.f 1.5V and internal resistance of 1.0$\mathrm{\Omega }$ are connected in parallel across an external resistance of $\frac{2}{3}$$\mathrm{\Omega }$. Calculate the value of the current in the resistor Options:
  A) 0.5 A
  B) 0.9A
  C) 1.5A
  D) 4.5A
  Show Answer
  The correct answer is C .
• Question 19:

  Which of the following thermometers measures temperature from the thermal radiation emitted by objects?

  Options:
  A) Pyrometer thermometer
  B) Platinum resistance thermometer
  C) Thermocouple thermometer
  D) Constant pressure gas thermometer
  Show Answer
  The correct answer is A .
• Question 20:

  A train has an initial velocity of 44m/s and an acceleration of -4m/s${}^2$. Calculate its velocity after 10 seconds

  Options:
  A) 10m/s
  B) 6m/s
  C) 8m/s
  D) 4m/s
  Show Answer
  The correct answer is D .