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 341: An air bubble rises from the bottom to the top of a water dam which is 40m deep. The volume of the bubble just below the surface is 2.5cm³. Find its volume at the bottom of the dam, if atmospheric pressure is equivalent to 10m water Options:
  A) 0.0cm³
  B) 2.0cm³
  C) 1.6cm³
  D) 0.625cm³
  E) 0.5cm³
  Show Answer
  The correct answer is E .
• Question 342: Heat may be transferred by conduction, convection and radiation. By which of these methods does heat travel through vacuum? Options:
  A) conduction only
  B) convection only
  C) radiation only
  D) non of these methods
  Show Answer
  The correct answer is C .
• Question 343: When very hot water is poured into a thin-walled glass container, it is less likely to break because Options:
  A) all parts of the container got heated-uniformly
  B) glass can withstand a very high temperature
  C) the molecules of glass are too far apart to cause breakages of the container
  D) the outer part of the container is cooler than the inner part
  E) thin glass does not expand fast
  Show Answer
  The correct answer is A .
• Question 344: The force experienced by an object of mass 60.0kg in the moon's gravitational field is 1.002 x 10²N. What is the intensity of the gravitational field? Options:
  A) 0.60Nkg^-1
  B) 1.67Nkg^-1
  C) 6.12 x 10²Nkg^-1
  D) 9.81ms^-2
  Show Answer
  The correct answer is B .
• Question 345: The specific latent heat of fusion of lead is the amount of heat required to Options:
  A) melt lead at its melting point
  B) heat a unit mass of lead through 1^oC
  C) change the state of a unit mass of lead at its melting point
  D) change the state of a unit mass of lead at its boiling point
  Show Answer
  The correct answer is C .
• Question 346: The volume of an air bubble increases from the bottom to the top of a lake at constant temperature because Options:
  A) atmospheric pressure acts on the surface of the lake
  B) pressure increases with depth
  C) density remains constant with pressure
  D) the bubble experiences an upthrust
  Show Answer
  The correct answer is B .
• Question 347: Which of the following assumptions is made in a simple pendulum experiment? the Options:
  A) suspending string is inextensible
  B) bob has a finite size
  C) bob has a definite mass
  D) initial angle of oscillation must be large
  Show Answer
  The correct answer is A .
• Question 348:

  A progressive wave equation is represented by y = a sin(150 πt - πx/4). if the phase difference of a progressive wave is 45°, the value of x in the equation is

  Options:
  A) 3 cm
  B) 4 cm
  C) 1 cm
  D) 2 cm
  Show Answer
  The correct answer is C .
• Question 349: If the angle between two vector P and Q is O^o, the vectors are said to Options:
  A) intersect at the angle 45^o
  B) intersect at the angle 60^o
  C) be parallel
  D) be perpendicular
  Show Answer
  The correct answer is C .
• Question 350:

  Which of the units of the following physical quantities are derived?

  I. Area
  II. Thrust
  III. Pressure
  IV. Mass

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