NECO Physics Exam Past Questions and Answers

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 231: Which of the following radiations has the shortest wavelength? Options:
  A) Infrared rays
  B) Light waves
  C) Microwaves
  D) Ultraviolet rays
  E) X-rays
  Show Answer
  The correct answer is E.
• Question 232: Radio receivers are tuned using Options:
  A) electromagnets
  B) electric motors
  C) Inductors
  D) variable capacitors
  E) variable resistors
  Show Answer
  The correct answer is D.
• Question 233: Three non-parallel coplanar forces which can be represented both in magnitude and direction by the three sides of a triangle taken in order will Options:
  A) have any one force being the equilibrant of the other two
  B) make a body move randomly
  C) make a body oscillate
  D) move a body along a straight line
  E) rotate a body about its axis
  Show Answer
  The correct answer is A.
• Question 234: Which of the following statements is correct? Options:
  A) Alpha particles have a large mass and high penetrating power
  B) Alpha particles have a small mass and a low penetrating power
  C) Beta partials have no mass and a high penetrating power
  D) Beta particles have a large mass and a low penetrating power
  E) Gamma rays have no mass and a high penetrating power
  Show Answer
  The correct answer is E.
• Question 235: A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is Options:
  A) Fs cos θ
  B) Fs cosec θ
  C) Fs sec θ
  D) Fs sin θ
  E) Fs tan θ
  Show Answer
  The correct answer is A.
• Question 236: A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave. Options:
  A) 1.3 × 10²m
  B) 3.0 × 10²m
  C) 2.4 × 10²m
  D) 5.0 × 10²m
  E) 7.5 × 10²m
  Show Answer
  The correct answer is E.
• Question 237: Which of the following is a percussion Instrument? Options:
  A) Flute
  B) Guitar
  C) Piano
  D) Trumpet
  E) Xylophone
  Show Answer
  The correct answer is E.
• Question 238: Which of the following is used for shielding radioactive fallout? Options:
  A) Aluminum
  B) Lead
  C) Iron
  D) Plastic
  E) Wood
  Show Answer
  The correct answer is B.
• Question 239: The charge of an alpha particle can be neutralized by Options:
  A) 1 beta particle
  B) 2 photons of gamma rays
  C) 2 beta particles
  D) 4 beta particles
  E) 4 photons of gamma rays
  Show Answer
  The correct answer is C.
• Question 240: Calculate the peak voltage that could be obtained from a 220 V${}_{r.m.s}$main supply. Options:
  A) 70.7V
  B) 110.0V
  C) 155.6V
  D) 311.1V
  E) 440.0V
  Show Answer
  The correct answer is D.