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 2041: The dimension of universal gravitational constant is……….? Options:
  A) ­$M{­}^{–1}{L}^3{T}^{–2}$
  B) ML³T²
  C) ML³
  D) MLT^-2
  Show Answer
  The correct answer is A .
• Question 2042:

  A few grains of table salt were put in a cup of cold water, kept at constant temperature and left undistributed. Eventually all the water tested salty. This action isdue to?

  Options:
  A) convection
  B) osmosis
  C) capillarity
  D) diffusion
  Show Answer
  The correct answer is D .
• Question 2043: A boy observes a piece of stone at the bottom of a river 6.0m deep. If he looks from the surface of the river, what is the apparent distance of the stone from him? [Refractive Index of Water = 4/3] Options:
  A) 8.0m
  B) 5.5m
  C) 5.0m
  D) 4.5m
  Show Answer
  The correct answer is D .
• Question 2044: A machine has a velocity ratio of 5. It requires a 50kg weight to overcome a 200kg weight. The efficiency is Options:
  A) 4%
  B) 5%
  C) 40%
  D) 50%
  E) 80%
  Show Answer
  The correct answer is E .
• Question 2045: In a gas experiment, the pressure of the gas is plotted against the reciprocal of the volume of the gas at a constant temperature. the unit of the slope of the resulting curve is Options:
  A) force
  B) force/m
  C) work
  D) force/m³
  E) energy/m³
  Show Answer
  The correct answer is C .
• Question 2046:

  A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0°C and the other is steam at 100°C, the millivoltmeter reads 4mV. What is the maximum temperature which this arrangement can measure

  Options:
  A) 100${}^o$C
  B) 248${}^o$C
  C) 250${}^o$C
  D) 350${}^o$C
  Show Answer
  The correct answer is C .
• Question 2047: The total energy required to send a unit positive charge round a complete electrical circuit is the Options:
  A) kinetic energy
  B) potential difference
  C) electromotive force
  D) electrical energy
  Show Answer
  The correct answer is B .
• Question 2048: Which of the following media allow the transmission of sound wave through them i. Air. ii. Liquids. iii. Solids. Options:
  A) i and ii only
  B) i and iii only
  C) ii and iii only
  D) i,ii and iii
  Show Answer
  The correct answer is D .
• Question 2049:

  

  The figure above shows the heights of two liquids X and Y when some air is sucked out of the apparatus through the pump P. The diameter of the table in X is twice That of the Tube In Y. What is the relative density of the liquid X with respect to liquid Y

  Options:
  A) 1/3
  B) 2/3
  C) 3
  D) 6
  Show Answer
  The correct answer is C .
• Question 2050: 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 .