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 191: An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms^-1] Options:
  A) 957m
  B) 1914m
  C) 3828m
  D) 8700m
  E) 17400m
  Show Answer
  The correct answer is A.
• Question 192: Which of the following substances undergoes sublimation? Options:
  A) Ether
  B) Ice
  C) Iodine
  D) Naphthalene
  E) Turpentine
  Show Answer
  The correct answer is D.
• Question 193:

  Determine the value of x from the nuclear reaction below:

  ${}_{86}^{222}Rn$ → ${}_{88}^{x}Ra$ + 2β + energy

  Options:
  A) 220
  B) 222
  C) 224
  D) 226
  E) 228
  Show Answer
  The correct answer is B.
• Question 194: The inside of a vacuum flask is usually coated with silver to reduce heat loss by Options:
  A) condensation
  B) conduction
  C) convection
  D) evaporation
  E) radiation
  Show Answer
  The correct answer is E.
• Question 195: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E.
• Question 196: 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 197: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E.
• Question 198:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E.
• Question 199: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E.
• Question 200: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E.