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 391: The invisible part of the spectrum of white light consists of Options:
  A) Infra-red and ultra-violet only
  B) Infra-red, ultra-violet and blue only
  C) red, orange and green only
  D) red and violet only
  E) yellow and indigo only
  Show Answer
  The correct answer is A .
• Question 392: If a cage containing a truck of coal weighing 750 kg is raised to a height of 90 m in a minute, what is the total power expended?
  [g = 10 ms²] Options:
  A) 11.50 kw
  B) 12.60 kw
  C) 11.25 kw
  D) 12.10 kw
  Show Answer
  The correct answer is C .
• Question 393:

  

  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 394: 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 395: The unit of inductance is Options:
  A) Weber
  B) Telsa
  C) Hertz
  D) Henry
  E) Farad
  Show Answer
  The correct answer is D .
• Question 396:

  In semi-conductor, the carriers of current at room temperature are

  Options:
  A) electrons only
  B) electrons and holes
  C) holes only
  D) electron and ions
  Show Answer
  The correct answer is B .
• Question 397: The volume of a given mass of gas is 40cm³ at 27° C. What is its volume at 90° C if its pressure remains constant? Options:
  A) 32.84cm³
  B) 40.02cm³
  C) 48.40cm³
  D) 57.44cm³
  E) 72.84cm³
  Show Answer
  The correct answer is C .
• Question 398:

  A solid weighs10.00N in air,6N when forcefully immersed in water, and 7.0N when fully immersed in a liquid, X. Calculate the relative density of the liquid X.

  Options:
  A) $\frac{5}{3}$
  B) $\frac{4}{3}$
  C) $\frac{3}{4}$
  D) $\frac{7}{10}$
  Show Answer
  The correct answer is C .
• Question 399: The operation of an optical fibre is based on the principal of Options:
  A) dispersion of light
  B) interference of light
  C) refraction of light
  D) polarization of light
  Show Answer
  The correct answer is C .
• Question 400: 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 .