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 761: At constant pressure, the density of a fixed mass of gas is Options:
  A) constant with temperature
  B) proportional to its volume
  C) inversely proportional to its temperature
  D) independent of its volume
  Show Answer
  The correct answer is C .
• Question 762: A 100kg box is pushed along a road with force of 500N. If the box moves with a uniform velocity, the coefficient of friction between the box and the road is Options:
  A) 0.4
  B) 1.0
  C) 0.8
  D) 0.5
  Show Answer
  The correct answer is D .
• Question 763: The ice and steam points of mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread when the length is 12cm, the temperature is Options:
  A) 32^oC
  B) 48^oC
  C) 56^oC
  D) 65^oC
  E) 75^oC
  Show Answer
  The correct answer is C .
• Question 764: A 20kg mass is to be pulled up a slope inclined at 30^o to the horizontal. If the efficiency of the plane is 75%, the force required to pull the load up the plane is [g = 10ms^-2] Options:
  A) 13.3N
  B) 73.5N
  C) 133.3N
  D) 53.2N
  Show Answer
  The correct answer is C .
• Question 765: A regular spacing or arrangement of atoms in a crystalline material is called Options:
  A) Orbit
  B) Lattice
  C) Atomic structure
  D) Energy level
  Show Answer
  The correct answer is B .
• Question 766: As the pressure of a fluid increases, its viscosity Options:
  A) decreases
  B) increases
  C) increases then decreases
  D) remains constant
  Show Answer
  The correct answer is B .
• Question 767:

  The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20º and 80ºC respectively is?

  Options:
  A) 3.0 x 10${}^2$km${}^{-1}$
  B) 3.0 x 10${}^3$km${}^{-1}$
  C) 5.0 x 10${}^3$km${}^{-1}$
  D) 3.0 x 10${}^4$km${}^{-1}$
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  The correct answer is B .
• Question 768:

  ${}_{13}^{27}Al$ + ${}_0^{1}n$ $\Rightarrow$ ${}_{11}^{24}Na$ + X

  Options:
  A) a proton
  B) a gamma ray
  C) a helium particle
  D) an alpha particle
  Show Answer
  The correct answer is D .
• Question 769: Change of state is accompanied by change of Options:
  A) temperature
  B) volume
  C) heat content
  D) temperatureb and volume
  E) volume and heat content
  Show Answer
  The correct answer is C .
• Question 770:

  Electrons were discovered by

  Options:
  A) Dalton
  B) James Charwick
  C) J.J. Thompson
  D) Niels Bohr
  Show Answer
  The correct answer is C .