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 1071: What is the length of liquid column in a barometer tube that would support an atmospheric pressure of 102000Nm^-2 if the density of the liquid is 2600kgm^-3? [g = 10ms^-2] Options:
  A) 0.75m
  B) 0.76m
  C) 3.92m
  D) 39.23m
  Show Answer
  The correct answer is C .
• Question 1072: The surfaces of conveyor belts are made rough so as to Options:
  A) protect them while carrying loads
  B) prevent the loads from slipping
  C) enable them to carry more load
  D) make them stronger
  Show Answer
  The correct answer is B .
• Question 1073: When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The ratio of the specific heat capacity of P to Q is Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .
• Question 1074: When the volume of a given mass of gas is halved and its temperature doubled, the pressure Options:
  A) remains constant
  B) increases by a factor of 4
  C) increases by a factor of 3
  D) decreases by a factor of 4
  Show Answer
  The correct answer is B .
• Question 1075: Radio waves belong to the class of wave whose velocity is about Options:
  A) 34m/s
  B) 3 ×10⁶m/s
  C) 3 ×10⁸m/s
  D) 3 × 10^-8m/s
  Show Answer
  The correct answer is C .
• Question 1076: For correcting long sight defects in the human eye we require a Options:
  A) converging lens
  B) diverging lens
  C) microscope
  D) periscope
  E) plain glass sheet
  Show Answer
  The correct answer is A .
• Question 1077: A simple pendulum, 0.6m long, has a period of 1.5s. What is the period of a similar pendulum of 0.4m length in the same location? Options:
  A) $1.5\frac{\sqrt{2}}{3}$s
  B) $1.5\frac{\sqrt{3}}{2}$s
  C) 2.25s
  D) 1.00s
  E) 2.00s
  Show Answer
  The correct answer is A .
• Question 1078: When cold water is poured on a can containing hot water, the can collapses because the Options:
  A) steam condeses and occupies the partial vacuum in the can
  B) external air pressure counter balances the pressure within the can
  C) steam expands to occupy the vacuum remaining in the can
  D) external pressure becomes greater than the pressure within the can.
  Show Answer
  The correct answer is D .
• Question 1079:

  Two metals P and Q are heated through the same temperature difference. If the ratio of the linear expansivities of P to Q is 2:3 and the ratio of their

  Length is 3: 4 respectively, the ratio of the increase in lengths of P to Q is

  Options:
  A) 1:2
  B) 2:1
  C) 8:9
  D) 9:8
  Show Answer
  The correct answer is A .
• Question 1080: Temperature is the measure of the Options:
  A) quantity of heat transferred into the molecules of an object
  B) mean kinetic energy of the molecules of the object
  C) kinetic energy of any individual molecule of the substance
  D) amount of work done by the molecules of the object
  Show Answer
  The correct answer is B .