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 1381: a ray of light which strikes a glass slab from air at normal incidence passes through the slab Options:
  A) undeviated and undisplaced at a lower speed
  B) deviated and undisplaced at a lower speed
  C) deviated and displaced at a lower speed
  D) undeviated and displaced at a faster speed
  Show Answer
  The correct answer is A .
• Question 1382: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 1383: Which of the following apparatus will require the smallest fuse rating for its protection? Options:
  A) 60W, 240V
  B) 60W, 40V
  C) 40W, 12V
  D) 40W, 5V
  Show Answer
  The correct answer is A .
• Question 1384: The velocity of sound in air will be doubled if it's absolute temperature is Options:
  A) Quadrupled
  B) Constant
  C) Halved
  D) Doulbed
  Show Answer
  The correct answer is A .
• Question 1385: What is stored by a dry Leclanhé cell? Options:
  A) chemical energy
  B) heat energy
  C) mechanical energy
  D) nuclear energy
  E) solar energy
  Show Answer
  The correct answer is A .
• Question 1386: The magnetic effect of a current-carrying coil is NOT utilized in the making of a/an Options:
  A) carbon microphone
  B) electric bells
  C) magnetic relay
  D) telephone earpiece
  E) thermostat
  Show Answer
  The correct answer is E .
• Question 1387:

  Which expression gives magnetic flux?

  Options:
  A) qVB sin$\theta$
  B) $\frac{\mu \varphi I}{2\pi r}$
  C) BA cos $\theta$
  D) -N $\frac{d\varphi }{dt}$
  Show Answer
  The correct answer is C .
• Question 1388: 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 1389: If the refractive index of glass is 1.5, what is the critical angle at the air-glass interface? Options:
  A) sin^-1$\frac{1}{2}$
  B) sin^-1$\frac{2}{3}$
  C) sin^-1$\frac{3}{4}$
  D) sin^-1$\frac{8}{9}$
  Show Answer
  The correct answer is B .
• Question 1390: The term torque means Options:
  A) the equilibrant of two concurrent forces
  B) the moment of a force about an ads
  C) the resultant of several forces acting on a body in equilibrium
  D) two coplanar forces at right angle to each other
  E) two equal and opposite forces whose lines of action do not coincide
  Show Answer
  The correct answer is B .