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 1: The device in which one circuit controls another, especially if the current in the second circuit is large or dangerous is known as Options:
  A) Electromagnetic devices
  B) Magnetic relay device
  C) None at all
  D) Sextant
  Show Answer
  The correct answer is B .
• Question 2: A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5 ms^-1. find the coefficient of friction between the road and the tyres. Options:
  A) 25.00
  B) 2.50
  C) 0.50
  D) 0.25
  Show Answer
  The correct answer is D .
• Question 3: Which of the following statements about wave motion is correct? Options:
  A) Electromagnetic waves are transverse
  B) Transverse waves do not require a medium for propagation
  C) Longitudinal waves vibrate perpendicular to the direction of travel
  D) All mechanical waves are longitudinal
  Show Answer
  The correct answer is A .
• Question 4:

  

  The correct position for a fuse in the diagram above is

  Options:
  A) between P and Q
  B) Q
  C) S
  D) P
  Show Answer
  The correct answer is D .
• Question 5: A solid of weight 0.600N is totally immersed in oil and water respectively. If the upthrust of oil is 0.210N and the relative density of oil is 0.875. Find the upthrust in water. Options:
  A) 0.600N
  B) 0.360N
  C) 0.240N
  D) 0.180N
  Show Answer
  The correct answer is C .
• Question 6: A waterfall is 1.260m high. Calculate the change in temperature of a quantity of water that falls from the top to the bottom of the waterfall. (Neglect heat losses to the surroundings, take g as 10m^-2 and specific heat capacity of water as 4200Jkg^-1K^-1) Options:
  A) 0.3^oC
  B) 3.0^oC
  C) 33.3^oC
  D) 42.0^oC
  E) 100.0^oC
  Show Answer
  The correct answer is B .
• Question 7:

  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${}^{-1}$
  Show Answer
  The correct answer is B .
• Question 8: A plane inclined at an angle of 30^o to the horizontal has an efficiency of 60%. The force parallel to the plane required to push a load of 120N uniformly up the plane is Options:
  A) 60N
  B) 100N
  C) 120N
  D) 200N
  E) 240N
  Show Answer
  The correct answer is B .
• Question 9: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 10: The pitch of an acoustic device can be increased by Options:
  A) increasing the frequency
  B) increasing the amplitude
  C) decreasing the loudness
  D) decreasing the intensity
  Show Answer
  The correct answer is A .