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 1861: The phenomenon of photoelectric effect is NOT used in Options:
  A) automatic doors
  B) bimetallic strip thermometers
  C) light meters in cameras
  D) setting off burglar alarms
  E) sound production from film tracks.
  Show Answer
  The correct answer is B .
• Question 1862: A stone of mass 1kg is dropped from a height of 10m above the ground and falls freely under gravity. Its kinetic energy 5m above the ground is then equal to Options:
  A) its kinetic energy on the ground
  B) twice its initial potential energy
  C) its initial potential energy
  D) half its initial potential energy
  Show Answer
  The correct answer is D .
• Question 1863: The angular dispersion of a prism depends on Options:
  A) the index of refraction only
  B) the angle of incidence as well as the index of refraction
  C) the angle of incidence only
  D) the thickness of the prism
  E) the prism angle
  Show Answer
  The correct answer is A .
• Question 1864:

  The volume of 0.354g of helium at 273°C and 114cm of mercury pressure is 2667cm${}^3$. Calculate the volume

  Options:
  A) 2000.25 cm${}^3$
  B) 200.025 cm${}^3$
  C) 4003.27 cm${}^3$
  D) 2010.25 cm${}^3$
  Show Answer
  The correct answer is B .
• Question 1865: A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is Options:
  A) 3.3cm
  B) 6.5cm
  C) 7.5cm
  D) 10.8cm
  E) 15.0cm
  Show Answer
  The correct answer is C .
• Question 1866: A drop of petrol makes a finger colder than a drop of water would because? Options:
  A) petrol takes its latent heat of veporization from the finger
  B) petrol takes its latent heat of fusion from the finger
  C) water is more viscious than petrol
  D) water has higher surface tension dan petrol
  Show Answer
  The correct answer is A .
• Question 1867:

  If a sound wave goes from a cold air region to a hot air region, its wavelength will?

  Options:
  A) increase
  B) decrease
  C) decrease then increase
  D) remain constant
  Show Answer
  The correct answer is A .
• Question 1868: An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms^-1] Options:
  A) 957m
  B) 1914m
  C) 3828m
  D) 8700m
  E) 17400m
  Show Answer
  The correct answer is A .
• Question 1869: 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 1870: Which of the following is TRUE of a particle moving in a horizontal circle with constant angular velocity? Options:
  A) The energy is costant but the linear momentum varies
  B) The linear momentum is conatant but the energy varies
  C) both energy and linear momentum are constant
  D) The speed and the linear velocity are both constant
  Show Answer
  The correct answer is C .