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 1191: A room is heated by means of a charcoal fire, An occupant of the room standing away from the fire is warmed mainly by Options:
  A) convection
  B) radiation
  C) conduction
  D) reflection
  Show Answer
  The correct answer is B .
• Question 1192: Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? Options:
  A) ${}_{28}^{30}X$
  B) ${}_{30}^{28}X$
  C) ${}_{30}^{58}X$
  D) ${}_{28}^{58}X$
  Show Answer
  The correct answer is D .
• Question 1193: An equipment whose power is 1500W and resistance is 375 ohms would draw a current of Options:
  A) 0.10A
  B) 2.00A
  C) 4.00A
  D) 77.5A
  Show Answer
  The correct answer is B .
• Question 1194:

  Which of the following is an example of a couple?

  Options:
  A) All of the above.
  B) The forces that are applied to the handle of a screwdriver when you twist it.
  C) The forces that are applied to a cross wench to loosen or tighten the lug nuts on a wheel of a car.
  D) The forces that are applied to the steering wheel of a car when you turn it.
  Show Answer
  The correct answer is A .
• Question 1195: The bond between silicon and germanium is Options:
  A) dative
  B) covalent bond
  C) trivalent
  D) ionic
  Show Answer
  The correct answer is B .
• Question 1196:

  

  The figure above shows three different ways of hanging a heavy picture from a hook. the tension in the string will be

  Options:
  A) Greatest in X
  B) Greatest in Y
  C) Greatest in Z
  D) Same in each one
  Show Answer
  The correct answer is C .
• Question 1197:

  On a fairly cool rainy day when the temperature is 20^oC, the length of a steel railroad track is 20m. What will be its length on a hot a dry day when the temperature is 40^oC?

  [coefficient of linear expansion of steel = 11 x 10^-6K^-1]

  Options:
  A) 20.013m
  B) 20.009m
  C) 20.004m
  D) 20.002m
  Show Answer
  The correct answer is C .
• Question 1198: When 100g of liquids L₁ at 78^oC was mixed with Xg of liquid L₂ at 50^oC, the final temperature was 60^oC. Given that the specific heat capacity of L₂is half that of L₁, find x Options:
  A) 50g
  B) 100g
  C) 150g
  D) 200g
  Show Answer
  The correct answer is C .
• Question 1199: A body of mass M₁ moving with a velocity U collides with a stationary body of mass M₂ and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V? Options:
  A) M₁ + M₂ ÷ M₁U
  B) M₂U ÷ M₁ – M₂
  C) M₁U ÷ M₁ – M₂
  D) M₁U ÷ M₁+ M₂
  E) M₂U ÷ M₁ + M₂
  Show Answer
  The correct answer is D .
• Question 1200: What must be the distance between an object and a converging lens of focal length 20cm to produce an erect image two times the object height? Options:
  A) 20cm
  B) 15cm
  C) 10cm
  D) 5cm
  Show Answer
  The correct answer is C .