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 1801: The motion of smoke particles from a chimney is typical of? Options:
  A) random motion
  B) circular motion
  C) rotational motion
  D) oscillatory motion
  Show Answer
  The correct answer is A .
• Question 1802: A rectangular metal block of volume 10^-6m³ at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10^-5k^-1, the percentage change of it volume is Options:
  A) 1.5%
  B) 1.1%
  C) 0.4%
  D) 0.1%
  Show Answer
  The correct answer is B .
• Question 1803: 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 .
• Question 1804:

  A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is?

  Options:
  A) 1.25 x 10${}^4$W
  B) 2.50x 10${}^4$W
  C) 1.25 x 10${}^6$W
  D) 2.50 x 10${}^6$W
  Show Answer
  The correct answer is A .
• Question 1805: The thermometric properties of the thermocouple is that is Options:
  A) e.m.f. changes with temperature
  B) resistance changes with temperature
  C) volume changes with temperature
  D) pressure changes with resistance
  Show Answer
  The correct answer is A .
• Question 1806: One end of a long wire is fixed while a vibrator is attached to the other end. When the vibrator is energized, the types of waves generated in the wire are Options:
  A) stationary and longitudinal
  B) stationary and transverse
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is C .
• Question 1807: The length of a displaced pendulum ball which passes its lowest point twice every seconds is [g = 10m^-2] Options:
  A) 0.25 m
  B) 0.45 m
  C) 0.58m
  D) 1.00m
  Show Answer
  The correct answer is A .
• Question 1808:

  

  In the J-tube above, Y and X are on the same horizontal level and 30cm³ of air is trapped above Y when the atmospheric pressure is 75cm Hg, calculate the volume of air trapped above Y when 15cm Hg is now poured into the limb above X

  Options:
  A) 15 cm³
  B) 25 cm³
  C) 35 cm³
  D) 45 cm³
  Show Answer
  The correct answer is B .
• Question 1809: A machine whose efficiency is 75% is used to lift a load of 1000N. Calculate the effort put in to the machine if it has a Velocity ratio of 4. Options:
  A) 343.32N
  B) 233.33N
  C) 333.33N
  D) 334.33N
  Show Answer
  The correct answer is C .
• Question 1810: Which of the following statements is CORRECT? Options:
  A) charges generated on glass rubbed with silk are called negative
  B) charges in various media can be carried by protons detached from their atom
  C) the magnitude of any charge is a multiple of the charge of an electron
  D) the intensity of an electric field is a scalar quantity
  E) if 500 joules of work are required to move a 2-coulomb charge between two points, the potential difference between the two point is 100V
  Show Answer
  The correct answer is C .