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 1: A radioisotope has a decay constant of 10^-7s^-1. The average life of the radioisotope is Options:
  A) 1.00 x 10⁷s
  B) 6.93 x 10⁸s
  C) 1.00 x 10^-7s
  D) 6.93 x 10⁷s
  Show Answer
  The correct answer is B .
• Question 2: A particle moves in a circular orbit of radius 0.02m. If the speed of the particle is 0.88ms^-1, calculate its frequency in cycles per second Options:
  A) 2.0Hz
  B) 7.0Hz
  C) 8.8Hz
  D) 14.0Hz
  E) 17.6Hz
  Show Answer
  The correct answer is B .
• Question 3:

  

  In the Figure above, QR is a vertical conductor and the current I flows from R to Q, P is a point on the horizontal plane and is to the south of the wire. The direction of the magnetic field at P due to the current is

  Options:
  A) Upward
  B) North
  C) South
  D) West
  E) East
  Show Answer
  The correct answer is D .
• Question 4:

  Which of the following instruments consumes the highest current?

  I. Electric iron II. Television set III. Torch light IV. Immersion heater

  250v 220v 6v 110v

  1kW 110W 30W 500W

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is C .
• Question 5: A galvanometer of resistance 20$\mathrm{\Omega }$ is to be provided with a shunt that $\frac{1}{10}$ of the whole current in a circuit passes through the galvanometer. The resistance of the shunt is Options:
  A) 2.00$\mathrm{\Omega }$
  B) 2.22$\mathrm{\Omega }$
  C) 18.00$\mathrm{\Omega }$
  D) 18.22$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 6: The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10^-6m³m of water is made of Options:
  A) zinc
  B) brass
  C) copper
  D) gold
  E) silver
  Show Answer
  The correct answer is B .
• Question 7:

  The binding energy of (${}_2^4\text{He}$) is

  [atomic mass of proton = 1.00783U, atomic mass of neutron = 1.00867U]

  Options:
  A) 4.033U
  B) 2.017U
  C) 0.033U
  D) 0.330U
  Show Answer
  The correct answer is C .
• Question 8: The amount of heat required to raise the temperature of a body is Options:
  A) Thermal energy
  B) thermal conduction
  C) heat loss
  D) specific heat capacity
  E) thermal capacity
  Show Answer
  The correct answer is E .
• Question 9: The pressure of one mole of an ideal gas of volume 10^-2 m³ at a temperature of 27°c is
  [molar gas constant = 8.3 J mol^-1 k^-1] Options:
  A) 2.49 x 10⁴ Nm^-2
  B) 2.24 x 10⁴ Nm^-2
  C) 2.49 x 10⁵ Nm^-1
  D) 2.24 x 10⁵ Nm^-1
  Show Answer
  The correct answer is C .
• Question 10:

  An ammeter of resistance 1.0$\mathrm{\Omega }$ has a full-scale deflection of 50mA. Determine the resultant full-scale deflection of the meter when a shunt of 0.0111$\mathrm{\Omega }$ is connected across its terminals.

  Options:
  A) 400mA
  B) 450mA
  C) 500mA
  D) 550mA
  Show Answer
  The correct answer is C .