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 1291: Which of the following types of motion are oscillatory? i.a diving board when used by a diver. ii. the motion of the balance wheel of a wrist watch. iii. the motion of the turn-table of a record player. iv. the motion of the center of a ten kobo piece as it rolls down an inclined plane. v. the motion of the needle of a D.C. ammeter into which a low A.C. current is passed Options:
  A) i and ii
  B) i, ii and iii
  C) ii, ii and iv
  D) i, ii and v
  E) iii, iv and iv
  Show Answer
  The correct answer is A .
• Question 1292:

  If a sound wave goes from a cold air region to a hot air region, its wavelength will?

  Options:
  A) increase
  B) decrease
  C) decrease then increase
  D) remain constant
  Show Answer
  The correct answer is A .
• Question 1293:

  In Sunlight, a blue flower looks blue because we see the flower by the light it

  Options:
  A) receives from our eyes
  B) disperses
  C) absorbed
  D) reflect
  Show Answer
  The correct answer is D .
• Question 1294: Two inductors of inductance 4 II and 8 II are arrange in series and a current of 10 A is passed through them. What is the energy stored in them? Options:
  A) 500 J
  B) 50 J
  C) 133 J
  D) 250 J
  Show Answer
  The correct answer is C .
• Question 1295: A transformer is rated 240v. If the primary coil is 4000 turns and the secondary voltage 12v, determine the number of turns in the secondary coil. Options:
  A) 200
  B) 100
  C) 250
  D) 150
  Show Answer
  The correct answer is A .
• Question 1296: What charge is stored in a 0.1F capacitor when a 10V supply is connected across it? Options:
  A) 1C
  B) 5C
  C) 4C
  D) 2C
  Show Answer
  The correct answer is A .
• Question 1297: The ground is always cold at night because the Options:
  A) atmosphere absorbs the sun's energy at night
  B) earth radiates heat to the atmosphere at night
  C) sun no longer shine at night
  D) atmosphere reflects the sun's energy at night
  Show Answer
  The correct answer is B .
• Question 1298: The accurate measurement of the relative density of a substance in its powdered form is done with a beam balance and Options:
  A) a density bottle
  B) an eureka can
  C) a pipette
  D) a burette
  Show Answer
  The correct answer is A .
• Question 1299:

  0.5kg of water at 10ºC is completely converted to ice at 0ºC by extracting (88000) of heat from it. If the specific heat capacity of water is 4200jkg${}^1$ Cº. Calculate the specific latent heat of fusion of ice.

  Options:
  A) 9.0kjkg${}^{-1}$
  B) 84.0kjkg${}^{-1}$
  C) 134.0kjkg${}^{-1}$
  D) 168.0kjkg${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 1300: A 50W electric heater is used to heat a metal block of mass 5kg. If in 10 minutes a temperature rise of 12^oC is achieved, the specific heat capacity of the metal is Options:
  A) 400 J kg^-1K^-1
  B) 500 J kg^-1K^-1
  C) 390 J kg^-1K^-1
  D) 130 J kg^-1K^-1
  Show Answer
  The correct answer is B .