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 2491:

  An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?

  Options:
  A) 26.25 cm behind the mirror
  B) 10.5 cm behind the mirror
  C) 26.25 cm in front of the mirror
  D) 10.5 cm in front of the mirror
  Show Answer
  The correct answer is A .
• Question 2492: Which of the following motions will be produced by a pair of equal, opposite and non-collinear parallel forces acting on a body? Options:
  A) Oscillatory
  B) Random
  C) Rotational
  D) Translational
  E) Vibratory
  Show Answer
  The correct answer is D .
• Question 2493: An astronomical telescope which is being used to view a very distant object is said to be in normal adjustment if Options:
  A) the final image is at the near-point
  B) the image formed by the objective is before the focus of the eye piece
  C) the angular magnification is the ratio of the focal length of the eye-piece lens to that of the objective
  D) the foci dl the objective and the eye-piece coincide between the lenses
  E) the distance between the objective lens and the eye-piece is equal to the difference between their focal lengths.
  Show Answer
  The correct answer is D .
• Question 2494: A hydraulic press has a large circular piston of radius 0.8m and a circular plunger of radius 0.2m. A force of 500N is exerted by the plunger. Find the force exerted on the piston Options:
  A) 8000N
  B) 4000N
  C) 2000N
  D) 31N
  Show Answer
  The correct answer is D .
• Question 2495: 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 2496: A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply. The reactance of the inductor is Options:
  A) 200 Ω
  B) 50 Ω
  C) 100/π Ω
  D) 25/π Ω
  Show Answer
  The correct answer is A .
• Question 2497: The process through which free electrons leave the surface of hot metal is known as? Options:
  A) photon emission
  B) photo emission
  C) thermionic emission
  D) electron emission
  Show Answer
  The correct answer is C .
• Question 2498:

  A 40 kW electric cable is used to transmit electricity through a resistor of resistance 2.0Ω at 800 V. The power loss as internal energy is?

  Options:
  A) 4.0 x 10²W
  B) 5.0 x 10²W
  C) 4.0 x 10³W
  D) 5.0 x 10³W
  Show Answer
  The correct answer is D .
• Question 2499: A machine has a velocity ratio of 5. It requires a 50kg weight to overcome a 200kg weight. The efficiency is Options:
  A) 4%
  B) 5%
  C) 40%
  D) 50%
  E) 80%
  Show Answer
  The correct answer is E .
• Question 2500: The force with which an object is attracted to the earth is called its Options:
  A) acceleration
  B) mass
  C) gravity
  D) impulse
  E) weight
  Show Answer
  The correct answer is E .