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 1151: An object of mass 20kg is released from a height of 10m above the ground level. The kinetic energy of the object just before it hits the ground is Options:
  A) 200J
  B) 4000J
  C) 2000J
  D) 500J
  Show Answer
  The correct answer is C .
• Question 1152:

  Water and Kerosine are drawn respectively into the two limbs of a Hare's apparatus. The destiny of water is 1.0gcm${}^{-3}$ and the density of kerosine is 0.80gcm${}^{-3}$. If the height of the water column is 20.0cm, calculate the height of the kerosine column.

  Options:
  A) 1.6cm
  B) 16.0cm
  C) 20.0cm
  D) 25.0cm
  Show Answer
  The correct answer is D .
• Question 1153:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 1154:

  

  The diagram above shows a velocity - time graph. The statement that is true about this motion is that the car

  Options:
  A) has no acceleration between point F and G
  B) decelerates between F and H
  C) has a constant soeed between points E and F
  D) Accelerates between points F and G
  Show Answer
  The correct answer is A .
• Question 1155: In an A.C circuit, the ratio of r.m.s value to peak value of current is Options:
  A) 2
  B) $\frac{1}{2}$
  C) $\frac{1}{\sqrt{2}}$
  D) $\sqrt{2}$
  Show Answer
  The correct answer is C .
• Question 1156: An a.c. generator can be converted into a d.c. generator by replacing Options:
  A) the slip rings with split-ring commutators
  B) the slip rings with armatures
  C) the split-rings with slip rings
  D) the split-rings with brushes
  E) the brushes with slip-ring commutators.
  Show Answer
  The correct answer is A .
• Question 1157: If 8 x 10^-2J of work is required to move 100$\mu$C of charge from a point X to a point Y in an electrical circuit, the potential difference between X and Y is Options:
  A) 4.0 x 10² v
  B) 4.0 x 10⁴ v
  C) 8.0 x 10² v
  D) 8.0 x 10² v
  Show Answer
  The correct answer is C .
• Question 1158: A parallel plate capacitor of area 10cm² in vacuum has a capacitance of 10^-2$\mu$F. What is the distance between the plates?(e = 9 x 10^-12fm) Options:
  A) 9 x 10^-13m
  B) 9 x 10^-7m
  C) 9 x 10^-3m
  D) 9 x 10⁷m
  Show Answer
  The correct answer is B .
• Question 1159: Transistors are used for the Options:
  A) rectification of signals
  B) conversion of a.c to d.c
  C) amplification of signals
  D) conversion of d.c to a.c
  Show Answer
  The correct answer is C .
• Question 1160: Counting of currency notes with moist fingers is based on the principles of? Options:
  A) diffusion
  B) cohesion
  C) adhesion
  D) viscosity
  Show Answer
  The correct answer is C .