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 511: Which of the following is in a neutral equilibrium? Options:
  A) a heavy weight suspended on a string
  B) a cone resting on its slant edge
  C) a heavy-based table lamp
  D) the beam of a balance in use
  Show Answer
  The correct answer is B .
• Question 512:

  Totally reflecting prisms are preferred to mirrors in periscopes becauseI. mirror givegive multiple images

  II. silvering on mirrors is easy damaged

  III. mirrors reflect less light than totally reflecting prisms

  Options:
  A) I only
  B) I and II only
  C) I and III only
  D) II and III only
  E) I,II and III
  Show Answer
  The correct answer is D .
• Question 513:

  If it takes 5.0 hrs to drain a container of 540.0cm³ of water, what is the flow rate of water from the container in kg^-1? [Density of water = 1000kgm^-3]

  Options:
  A) 32.5kg^-1 s
  B) 31.5kg^-1 s
  C) 30.8kg^-1 s
  D) 30.0kg^-1 s
  Show Answer
  The correct answer is D .
• Question 514: The heights of the mercury thread in a mercury-in-glass thermometer when in melting ice and then in steam are 3cm and 18cm respectively. At a temperature of 60^oC the height would be Options:
  A) 7.5cm
  B) 9cm
  C) 10.8cm
  D) 12cm
  E) 12.6cm
  Show Answer
  The correct answer is D .
• Question 515: Calculate the critical angle for light travelling from water to air. (Refractive index of water = 1.33) Options:
  A) 36.9°
  B) 41.3°
  C) 48.8°
  D) 49.2°
  E) 51.4°
  Show Answer
  The correct answer is C .
• Question 516: The specific latent heat of vaporization of a substance is always Options:
  A) less than its specific latent heat of fusion
  B) greater than its specific heat of fusion
  C) equal to its specific latent heat of fusion
  D) all of the above depending on the nature of the substance
  E) none of the above
  Show Answer
  The correct answer is B .
• Question 517: The force on a current carrying conductor in a magnetic field is greatest when the Options:
  A) conductor makes an angle of 60° with the field
  B) force is idependent of the angles between the fields and the conductor
  C) conductor is parallel with the field
  D) conductor is at right angle with the field
  Show Answer
  The correct answer is D .
• Question 518: Which of the following statements about friction is NOT correct? Options:
  A) The force of kinetic friction is less than the force of static friction
  B) The force of kinetic friction between two surfaces is independent of the areas in contact provided the normal reaction is unchanged
  C) The force of rolling friction between two surfaces is less than the force of sliding friction
  D) The angle of friction is the angle between the normal reaction and the force of friction
  E) Friction may be reduced by lubriction
  Show Answer
  The correct answer is A .
• Question 519: A silicon material is dopped with an element of a certain group and an n-type semi-conductor is formed. the most likely group of the element is Options:
  A) V
  B) III
  C) I
  D) II
  Show Answer
  The correct answer is A .
• Question 520: The driving mirror of a car has a radius of curvature of 1m. A vehicle behind the car is 4m from the mirror. Find the image distance behind the mirror. Options:
  A) 8/7
  B) 4/9
  C) 9/2
  D) 4/7
  Show Answer
  The correct answer is B .