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 141: As a positively charge rod is brought nearer to the top cap of a positively charged gold leaf electroscope, the divergence of the leaves will Options:
  A) decrease to zero
  B) steadily increase
  C) decrease to zero and then increase
  D) remain constant
  E) increase to a maximum and then decrease
  Show Answer
  The correct answer is B .
• Question 142: A temperature scale has a lower fixed point of 40mm and a upper fixed point of 200mm. What is the reading on this scale when a thermometer reads 60^oC? Options:
  A) 33.3mm
  B) 36.0mm
  C) 96.0mm
  D) 136.0mm
  Show Answer
  The correct answer is D .
• Question 143: A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P? Options:
  A) 1500N
  B) 500N
  C) 4166N
  D) 750N
  Show Answer
  The correct answer is A .
• Question 144: When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off. Options:
  A) 4.50ms^-1
  B) 11.25ms^-1
  C) 20.00ms^-1
  D) 45.00ms^-1
  Show Answer
  The correct answer is C .
• Question 145: A clinical thermometer is different from other mercury in glass thermometers owing to Options:
  A) the constriction on its stem
  B) the grade of mercury used in it
  C) its long stem
  D) its wide range of temperatures
  Show Answer
  The correct answer is A .
• Question 146: The velocity of a sound wave at 27^oC is 360ms^-1. Its velocity at 127^oC is Options:
  A) 120√3 ms^-1
  B) 240 ms^-1
  C) 240√3 ms^-1
  D) 720√3 ms^-1
  Show Answer
  The correct answer is C .
• Question 147: The optical instrument which is suitable for viewing a nearby objects is ………..? Options:
  A) Telescope
  B) sextant
  C) microscope
  D) periscope
  Show Answer
  The correct answer is C .
• Question 148:

  The relationship between the coefficient of linear expansion $\alpha$ and volumetric expansion ($\gamma$) is-----------------

  Options:
  A) $\gamma$ = ${\alpha }^{-3}$
  B) $\gamma$ = $\alpha$
  C) 3$\alpha$
  D) $\gamma$ = ${\alpha }^3$
  Show Answer
  The correct answer is C .
• Question 149: A quantity of water at 0°C is heated to about 30°C. At each degree rise in temperature, its density will Options:
  A) rise steadily
  B) fall steadily
  C) fall then rise
  D) rise then fall
  Show Answer
  The correct answer is D .
• Question 150:

  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 .