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 1491: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads? Options:
  A) o
  B) $\frac{1}{2}$
  C) 2
  D) 8
  E) 32
  Show Answer
  The correct answer is D .
• Question 1492: The hatch door of a submarine has an area of 0.5m². The specific gravity of sea water is 1.03. Assume that g = 10ms^-1,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is Options:
  A) 1.03 x 10⁵N
  B) 1.03 x 10⁴Nm^-2
  C) 1.06 x 10⁵Nm^-2
  D) 2.06 x 10⁶N
  E) 1.03 x 10³N
  Show Answer
  The correct answer is E .
• Question 1493: One of the features of the fission process is that Options:
  A) its products are not radioactive
  B) it leads to chain reaction
  C) neutrons are not released
  D) the sum of the masses of the reactants equals the sum of masses of the products
  Show Answer
  The correct answer is B .
• Question 1494:

  Which of the following statements are correct of the production and propagation of waves?

  I. vibration produces waves

  II. waves transmit energy along the medium

  III. the medium through which the wave travels does not travel with the wave

  IV. waves do not require any medium for transmission

  Options:
  A) I and IV only
  B) II and IV only
  C) III and IV only
  D) I, II and III only
  Show Answer
  The correct answer is D .
• Question 1495: What is the least possible error in using a rule graduated in centimeters? Options:
  A) 0.1cm
  B) 0.5cm
  C) 1.0cm
  D) 2.0cm
  Show Answer
  The correct answer is A .
• Question 1496:

  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 1497: A transistor is used in the amplification of signals because it Options:
  A) controls the flow of current
  B) consumes a lot of power
  C) allows doping
  D) contains electron and hole carriers
  Show Answer
  The correct answer is A .
• Question 1498:

  The relationship between the coefficient of linear expansion $\alpha$ and volumetric expansion ($\gamma$) is-----------------

  Options:
  A) $\gamma$ = ${\alpha }^{-3}$
  B) $\gamma$ = $\alpha$
  C) 3$\alpha$
  D) $\gamma$ = ${\alpha }^3$
  Show Answer
  The correct answer is C .
• Question 1499: What is the relationship mechanical advantage (MA) velocity Ratio (V.R) and efficiency with percentage? Options:
  A) e = M.A/V.R × 100 %
  B) M.A = E.V.R
  C) V.R = 1 ÷ sin θ M.A
  D) M.A = 1/E × 100%
  Show Answer
  The correct answer is A .
• Question 1500: The net movement of solvent molecules from a region of high solvent potential to a region of lower solvent potential through a partially or semi permeable membrane is refer to as Options:
  A) Diffusion
  B) Osmosis
  C) Surface tension
  D) Cohesion
  Show Answer
  The correct answer is B .