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 61: Isotopes are nuclei which have Options:
  A) the same number of nuetrons and electrons
  B) equal number of electrons and protons
  C) the same atomic number but different number of neutrons
  D) the same number of total particles
  Show Answer
  The correct answer is C .
• Question 62: A vehicle of mass m is driven by an engine of power P from rest. Find the minimum time it will take to acquire a speed Options:
  A) $\frac{m{v}^2}{t}$
  B) $\frac{m{v}^2}{2t}$
  C) $\frac{mv}{t}$
  D) $\frac{mv}{2t}$
  Show Answer
  The correct answer is A .
• Question 63: What is the inductance (L) of an inductor whose reactance is 1Ω at 50/ π hertz (H)? Options:
  A) 100 H
  B) 0.01H
  C) 10H
  D) 1H
  Show Answer
  The correct answer is B .
• Question 64: The activity of a radioactive substance depends on Options:
  A) temperature and purity
  B) temperature and age
  C) purity and age
  D) age, purity and temperature
  E) none of the above
  Show Answer
  The correct answer is E .
• Question 65: In order to find the depth of the sea, a ship sends out a sound wave and receives an echo after one second. If the velocity of sound in water is 1500ms^-1, what is the depth of the sea? Options:
  A) 0.75km
  B) 1.50km
  C) 2.20km
  D) 3.00km
  E) 3.75km
  Show Answer
  The correct answer is A .
• Question 66: The thermal expansion of a solid is an advantage in Options:
  A) Balance wheel of a watch
  B) Construction of steel rail lines
  C) Construction of large steel bridges
  D) Fitting of tyres on wheels
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  The correct answer is A .
• Question 67: If a solid changes directly into a gas when heat is applied the process is called Options:
  A) vaporization
  B) evaporation
  C) sublimation
  D) ionization
  E) conversion
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  The correct answer is C .
• Question 68: Which of the following pairs of colours gives the widest separation in the spectrum of white light? Options:
  A) Red and Violet
  B) Green and Yellow
  C) Red and Indigo
  D) Yellow and Violet
  Show Answer
  The correct answer is A .
• Question 69: A well-lagged bar of length 100cm has its ends maintained at 100^oC and 40^oC respectively. What is the temperature at a point 60cm from the hotter end? Options:
  A) 58^oC
  B) 62^oC
  C) 64^oC
  D) 76^oC
  Show Answer
  The correct answer is D .
• Question 70: A 5-v battery is connected across the plates of a 2.0$\mu$F uncharged parallel plate capacitor. The charge on the capacitor after a long time is Options:
  A) 2.5$\mu$C
  B) 10.0$\mu$C
  C) 20.0$\mu$C
  D) 50.0$\mu$C
  Show Answer
  The correct answer is B .