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 451: The net movement of solvent molecules from a region of high solvent potential to a region of lower solvent potential through a partially or semi permeable membrane is refer to as Options:
  A) Diffusion
  B) Osmosis
  C) Surface tension
  D) Cohesion
  Show Answer
  The correct answer is B .
• Question 452: 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 B .
• Question 453:

  What quantity of heat is required to convert 20 g of ice at 0 ºC to water at the same temperature? (Specific latent heat of ice = 336 Jg${}^{-1}$)

  Options:
  A) 7.06 x 10${}^3$J
  B) 5.38 x 10${}^3$J
  C) 6.72 x 10${}^3$J
  D) 1.35 x 10${}^3$J
  Show Answer
  The correct answer is C .
• Question 454: The unit of moment of a couple can be expressed in? Options:
  A) N m^-1
  B) N m^-2
  C) N m
  D) N m²
  Show Answer
  The correct answer is C .
• Question 455:

  Gases conduct electricity under

  Options:
  A) high pressure and high voltage
  B) low pressure and low voltage
  C) normal pressure and low voltage
  D) low pressure and high voltage
  Show Answer
  The correct answer is D .
• Question 456: A gas has a volume of 100cm³ at 27^oC. If it is heated to temperature T until a final volume of 120cm³ is attained, calculate T Options:
  A) 33^oC
  B) 60^oC
  C) 87^oC
  D) 114^oC
  Show Answer
  The correct answer is C .
• Question 457:
  

  Two mirrors of the same length are arranged as shown in the diagram. A ray of light NO strikes the system at O and emerges along PQ. The emergent ray has been deviated through

  Options:
  A) 220${}^o$
  B) 200${}^o$
  C) 210${}^o$
  D) 180${}^o$
  Show Answer
  The correct answer is D .
• Question 458: Two tuning forks of frequency 256Hz and 260Hz are sounded close to each other. What is the frequency of the beats produced? Options:
  A) 2Hz
  B) 4Hz
  C) 8Hz
  D) 258Hz
  Show Answer
  The correct answer is B .
• Question 459:

  A device that converts sound energy into electrical energy is

  Options:
  A) the horn of a motor car
  B) an A.C. generator
  C) a microphone
  D) the telephone
  E) radio waves
  Show Answer
  The correct answer is C .
• Question 460: A liquid of mass 1.0 x 10³kg fills a rectangular tank of length 2.5m and width 2.0m. If the tank is 4m high, what is the pressure at the middle of the tank?[g = 10ms^-2] Options:
  A) 1.0 x 10⁴Nm^-2
  B) 2.0 x 10³Nm^-2
  C) 1.5 x 10³Nm^-2
  D) 1.0 x 10³Nm^-2
  Show Answer
  The correct answer is D .