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 1721:

  

  In the figure above, XY is of length 1m, The value of R at balance point Z is

  Options:
  A) 3.0Ω
  B) 13.3Ω
  C) 15.0Ω
  D) 30.0Ω
  Show Answer
  The correct answer is D .
• Question 1722:

  A gas at a volume of V${}_0$ in a container at pressure p${}_0$ is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?

  Options:
  A) $\frac{p_0}{5}$
  B) $\frac{4p_0}{5}$
  C) p${}_0$
  D) 5P${}_0$
  Show Answer
  The correct answer is D .
• Question 1723: When a box of mass 45kg, is given an initial speed of 5ms^-1 it slides along a horizontal floor a distance of 3m before coming to a rest. what is the coefficient of kinetic friction between the box and the floor? (G = 10ms^-2) Options:
  A) $\frac{5}{6}$
  B) $\frac{5}{12}$
  C) $\frac{1}{3}$
  D) $\frac{2}{3}$
  Show Answer
  The correct answer is B .
• Question 1724: A liquid-in-glass thermometer should quickly register temperature changes. This is achieved by choosing a liquid that Options:
  A) is opaque
  B) has high density
  C) has regular expansion
  D) has a high thermal conductivity
  E) can wet glass
  Show Answer
  The correct answer is D .
• Question 1725: Induced emfs are best explained using Options:
  A) Ohm's law
  B) Faraday's law
  C) Colomb's law
  D) Lenz's law
  Show Answer
  The correct answer is D .
• Question 1726:

  Which of the following has the lowest internal resistance when new?

  Options:
  A) Leclanche cell
  B) Daniell cell
  C) Torch battery
  D) Accumulator
  Show Answer
  The correct answer is D .
• Question 1727:

  A 45^o triangular glass prism can be used as a reflector of light because

  Options:
  A) A refraction never takes place in such a prism
  B) the angle of reflection equals the angle of incidence
  C) the refractive index of glass is less than 1
  D) it is transparent
  E) the critival angle angle for glass is less than 45^o
  Show Answer
  The correct answer is E .
• Question 1728:

  

  When the sun, moon and the earth are as shown in the diagram above an observer standing in X is in

  Options:
  A) Penumbra and sees a partial eclipse
  B) Penumbra and sees a total eclipse
  C) umbra and sees a partial eclipse
  D) umbra and sees a total eclipse
  Show Answer
  The correct answer is A .
• Question 1729: The resultant force of a couple is ………? Options:
  A) Infinity
  B) Zero
  C) One
  D) Half
  Show Answer
  The correct answer is B .
• Question 1730:

  A car moving at 20m/s with its horn blowing (f = 1200Hz) is chasing another car going at 15m/s. What is the apparent frequency of the horn as heard by the driver being chased?

  Options:
  A) 1.22KHz
  B) 2.40KHz
  C) 8.12KHz
  D) 1.22Hz
  Show Answer
  The correct answer is A .