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 891: A quantity of water at 0°C is heated to about 30°C. At each degree rise in temperature, its density will Options:
  A) rise steadily
  B) fall steadily
  C) fall then rise
  D) rise then fall
  Show Answer
  The correct answer is D .
• Question 892: What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42? Options:
  A) 21^o
  B) 22^o
  C) 23^o
  D) 24^o
  Show Answer
  The correct answer is D .
• Question 893: For a short sighted person, light rays from a point on a very distant object is focused Options:
  A) in front of the retina
  B) on the retina by a converging lens
  C) behind the retina by a diverging lens
  D) in front of the retina, a distance 2F from the lens
  Show Answer
  The correct answer is A .
• Question 894:

  How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?

  Options:
  A) 7.2 kJ
  B) 4.6 kJ
  C) 6.8 kJ
  D) 8.4 kJ
  Show Answer
  The correct answer is A .
• Question 895:

  A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal velocity of 50ms^-1. If it rebounced with a horizontal velocity of 30ms^-1, calculate the impulse of the ball on the ball.

  Options:
  A) 3.0Ns
  B) 4.5Ns
  C) 7.5Ns
  D) 12.0Ns
  Show Answer
  The correct answer is D .
• Question 896:

  A lorry accelerates uniformly in a straight line with acceleration of $4m{s}^{-}2$ and covers a distance of 250 m in a time interval of 10 s. How far will it travel in the next 10 s?

  Options:
  A) 650
  B) 900
  C) 800
  D) 250
  Show Answer
  The correct answer is A .
• Question 897: A magnet is moved through a coil of wire. The e.m.f. produced in the wire depends on Options:
  A) the number of turns in the coil
  B) the strength of the magnet
  C) the speed at which the magnet is moved
  D) all of the above
  E) none of the above
  Show Answer
  The correct answer is D .
• Question 898: A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is? Options:
  A) R < r
  B) R = r
  C) R = 2r
  D) R > r
  Show Answer
  The correct answer is B .
• Question 899: 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 900: If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric field intensity of the field is Options:
  A) 0.8
  B) 0.8N/C
  C) 20.0N/C
  D) 4.2N/C
  E) 20.0N/C
  Show Answer
  The correct answer is C .