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 681: What types of mirror are capable of producing parallel beams of light such as those arising from the headlamps of a car? Options:
  A) Parabolic mirrors
  B) Plane mirrors
  C) Cylindrical mirrors
  D) Spherical mirrors
  Show Answer
  The correct answer is A .
• Question 682:

  The impulse of a force is deduced from Newton's second law as

  Options:
  A) F = ma
  B) F = m($\frac{v-u}{t}$)
  C) F = mg
  D) F = mv - mu
  Show Answer
  The correct answer is B .
• Question 683: A charged particle is moving in a uniform magnetic field. if the direction of motion of the charged particle is parallel to the magnetic field, the path of the charge will Options:
  A) Be a straight line
  B) Curve inwards
  C) Be a parabola
  D) Curve outwards
  Show Answer
  The correct answer is A .
• Question 684:

  The potential energy in an elastic string of force constant k, which has an extension X is?

  Options:
  A) kX
  B) KX${}^2$
  C) ½KX${}^2$
  D) ½K
  Show Answer
  The correct answer is C .
• Question 685: The phenomenon where by the water droplets in the atmosphere combines with dust particles in the air to reduce visibility is Options:
  A) cloud
  B) mist
  C) hail
  D) fog
  Show Answer
  The correct answer is D .
• Question 686: A spring of force constant 1500Nm^-1 is acted upon by a constant force of 75N. Calculate the potential energy stored in the string Options:
  A) 1.9J
  B) 2.8J
  C) 3.45J
  D) 0.43J
  Show Answer
  The correct answer is A .
• Question 687: 10⁶J of heat is required to boil off completely 2kg of a certain liquid. Neglecting heat lost to the surroundings, the latent heat of vaporization of the liquid is Options:
  A) 2.0 x 10⁶J kg^-1
  B) 5.0 x 10⁶J kg^-1
  C) 2.0 x 10⁵J kg^-1
  D) 5.0 x 10⁵J kg^-1
  Show Answer
  The correct answer is D .
• Question 688: The linear expansivity of brass is 2 x 10^-5oC^-1. If the volume of a piece of brass is 10cm³ at 0^oC, what will be its volume at 100^oC? Options:
  A) 10.02cm³
  B) 10.04cm³
  C) 10.06cm³
  D) 10.20cm³
  E) 102.00cm³
  Show Answer
  The correct answer is C .
• Question 689:

  A person standing waist-deep in a swimming pool appears to have short legs because of light?

  Options:
  A) diffraction
  B) refraction
  C) reflection
  D) interference
  Show Answer
  The correct answer is B .
• Question 690: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .