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 441:

  

  In the diagram above, the pressure of the gas is

  Options:
  A) 86 cm of mercury
  B) 66 cm of mercury
  C) 96 cm of mercury
  D) 76 cm mercury
  Show Answer
  The correct answer is A .
• Question 442: The resultant of two forces is 50N. If the forces are perpendicular to each other and one of them makes an angle 0f 30^o with the resultant, find its magnitude. Options:
  A) 100.0N
  B) 57.7N
  C) 43.3N
  D) 25.0N
  Show Answer
  The correct answer is C .
• Question 443: At a fixed point below a liquid surface, the pressure downwards is P₁ and pressure upwards is P₂. It can be deduced that Options:
  A) P₁ > P₂
  B) P₁ ≥ P₂
  C) P₁< P₂
  D) P₁ = P₂
  Show Answer
  The correct answer is A .
• Question 444:

  A certain radioactive source emits radiation that was found to be deflected by both magneticand electric fields. The radiation is?

  Options:
  A) beta rays
  B) gamma rays
  C) x-rays
  D) ultra-violet rays
  Show Answer
  The correct answer is A .
• Question 445: An electric kettle, connected to a 240V mains, produces 6.0 x 10⁵J of heat energy to boil a quantity of water in 5 minutes. Find the resistance of the kettle. Options:
  A) 14.4$\mathrm{\Omega }$
  B) 28.8$\mathrm{\Omega }$
  C) 144$\mathrm{\Omega }$
  D) 288$\mathrm{\Omega }$
  E) 2880$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 446: An arrow of mass 0.1kg moving with a horizontal velocity of 15ms^-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is Options:
  A) 15.0 ms^-1
  B) 7.5 ms^-1
  C) 3.8 ms^-1
  D) 3.0 ms^-1
  Show Answer
  The correct answer is D .
• Question 447: A manometer is an instrument used for measuring Options:
  A) Relative density of liquid
  B) Pressure in liquids and gases
  C) Humidity
  D) Atmospheric pressure
  Show Answer
  The correct answer is B .
• Question 448: If the pressure of the vapour on top of an enclosed liquid is equal to the atmospheric pressure, what will be the temperature of the liquid enclosed? Options:
  A) room temperature
  B) boiling point
  C) freezing point
  D) standard temperature
  Show Answer
  The correct answer is B .
• Question 449: A train with an initial velocity of 20ms^-1 is subjected to a uniform deceleration of 2ms^-2. The time required to bring the train to a complete halt is Options:
  A) 40s
  B) 10s
  C) 20s
  D) 5s
  Show Answer
  The correct answer is B .
• Question 450: The mode of heat transfer which does not require a material medium is Options:
  A) conduction
  B) radiation
  C) convection
  D) propagation
  Show Answer
  The correct answer is B .