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 1221: The eye controls the amount of light reaching the retina by adjusting the Options:
  A) cornea
  B) iris
  C) retina
  D) optic nerve
  Show Answer
  The correct answer is B .
• Question 1222: Which of the following gas laws is equivalent to the work done? Options:
  A) Boyle' law
  B) Charles law
  C) Pressure law
  D) van der Waal's law
  Show Answer
  The correct answer is A .
• Question 1223: A circuit has an area of 0.4m² and consists of 50 loops of wire. If the loops are twisted and allowed to rotate at a constant angular velocity of 10 rad s^-1 in a uniform magnetic field of 0.4T, the amplitude of the induced voltage is Options:
  A) 8V
  B) 16V
  C) 20V
  D) 80V
  Show Answer
  The correct answer is D .
• Question 1224:

  

  In the diagram above, the pressure of the gas is

  Options:
  A) 86 cm of mercury
  B) 66 cm of mercury
  C) 96 cm of mercury
  D) 76 cm mercury
  Show Answer
  The correct answer is A .
• Question 1225:

  A 2H inductor has negligible resistance and is connected to a $\frac{50}{\pi }$ Hz A.C supply. The reactance of the inductor is?

  Options:
  A) 200$\mathrm{\Omega }$
  B) 50$\mathrm{\Omega }$
  C) $\frac{100}{\pi }$
  D) $\frac{25}{\pi \mathrm{\Omega }}$
  Show Answer
  The correct answer is A .
• Question 1226:

  

  In fig 6, a ray of light in air strikes a glass plate at an angle of incidence 60 degrees, the reflected ray is observed to be perpendicular to the refracted ray, what is the refractive index of the glass

  Options:
  A) 1.73
  B) 1.50
  C) 0.87
  D) 0.57
  Show Answer
  The correct answer is A .
• Question 1227: The inner diameter of a test tube can be measured accurately using a Options:
  A) micrometer screw guage
  B) pair of dividers
  C) metre rule
  D) pair of vernier calipers
  Show Answer
  The correct answer is D .
• Question 1228: An electric current of 2 amperes flows in a heating coil of resistance 50 ohms for 3 minutes 20 seconds. Determine the heat produced Options:
  A) 0.5kJ
  B) 8.0kJ
  C) 20.0kJ
  D) 40.0kJ
  Show Answer
  The correct answer is D .
• Question 1229: Vibration in a stretched spring cannot be polarized because they are Options:
  A) stationary waves
  B) transverse waves
  C) longitudinal waves
  D) mechanical waves
  Show Answer
  The correct answer is D .
• Question 1230:

  When three coplanar non-parallel are in equilibrium.i. they can be represented in magnitude and direction by the three sides of a triangle taken in order. ii. the lines of action meet at a point. iii. the magnitude of any one force equals the magnitude of the resultant of the other two forces. iv. any one force is the equivalent of the other two. Which of the following statements above are correct?

  Options:
  A) i and ii only
  B) i and iii only
  C) i, ii, iii, and iv
  D) none of them
  Show Answer
  The correct answer is A .