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 1081: Natural radioactivity is the random spontaneous disintegration of the nuclei of heavy isotopes of certain elements with the emission of Options:
  A) $\alpha$, X, and $\beta$
  B) $\alpha$, $\beta$ and $\gamma$-rays
  C) X, $\alpha$, $\gamma$-ray
  D) $\alpha$, $\beta$ and X-rays
  Show Answer
  The correct answer is B .
• Question 1082: the pressure of 3 moles of an ideal gas at a temperature of 27°C having a volume of 10^-3m³ is Options:
  A) 2.49 x 10⁵-2
  B) 7.47 x 10⁵-2
  C) 2.49 x 10⁶-2
  D) 7.47 x 10⁶-2
  Show Answer
  The correct answer is D .
• Question 1083:

  What volume of alcohol will have same mass as 4.2m^-3 of petrol?

  Density of alcohol = 8.4 x 10²kgm^-3, density of petrol =7.2x10³kgm^-3

  Options:
  A) 0.8m³
  B) 1.4m³
  C) 3.6m³
  D) 49.m³
  Show Answer
  The correct answer is C .
• Question 1084: Which of the following is NOT a fundamental S.I unit? Options:
  A) Meter
  B) Ampere
  C) Kelvin
  D) Seconds
  E) Radian
  Show Answer
  The correct answer is E .
• Question 1085: The instantaneous value of the induced e.m.f as a function of time is ε = ε_o sin ωt where ε_o is the peak value of the e.m.f. The instantaneous value of the e.m.f., one quarter of the period is Options:
  A) 0.00
  B) ^ε_o/₄
  C) ^ε_o/₂
  D) ε_o
  Show Answer
  The correct answer is D .
• Question 1086: A wave of frequency 10Hz forms a stationary wave pattern in a medium where the velocity is 20cms^-1. The distance between adjacent nodes is Options:
  A) 1.0cm
  B) 1.5cm
  C) 2.0cm
  D) 5.0cm
  Show Answer
  The correct answer is C .
• Question 1087: Why is it impossible for the lines of force of an electric field to cross one another? Options:
  A) like charges repel each other
  B) a charged particle is deflected by an eletric field
  C) like charges are arranged on the same line of force
  D) a positively charged particle can travel in only one direction at any time
  E) none of these is correct
  Show Answer
  The correct answer is D .
• Question 1088:

  A certain manufacturer wishes to make an n-type semiconductor. Which materials would he select for doping?

  Options:
  A) boron and antimony
  B) aluminium and antimony
  C) aluminium and indium
  D) arsenic and antimony
  Show Answer
  The correct answer is D .
• Question 1089:

  In which of the following device in the expansion of solid is a disadvantages?I. Simple pendulum

  II. Fire alarms

  III. Thermostat

  IV. Bimetallic thermometer

  Options:
  A) III only
  B) II & III only
  C) I only
  D) II, III & IV only
  Show Answer
  The correct answer is C .
• Question 1090: A wheel and axle have radii 80cm and 10cm respectively. If the efficiency of the machine is 0.85, an applied force of 1200N to the wheel will raise a load of Options:
  A) 8.0N
  B) 6.8N
  C) 8160N
  D) 9600N
  Show Answer
  The correct answer is C .