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 321: A narrow, uniform glass tube, closed at one end, constains air which is sealed by a thread of mercury. The tube is placed first horizontally and then vertically with the open end at the top. Which of the following statements is correct? Options:
  A) The length of the entrapped air in the horizontal position is less than that in the vertical position
  B) The length of the entrapped air in the vertical position is less than that in the horizontal position
  C) The length of the mercury column becomes shorter in the horizontal position than in the vertical position
  D) The length of the mercury column becomes shorter in the vertical position than in the horizontal position
  E) The pressure of the entrapped air is atmospheric in both cases.
  Show Answer
  The correct answer is B.
• Question 322: 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 323: A body that produces its own light is said to be Options:
  A) luminous
  B) non-incandescent
  C) opaque
  D) translucent
  E) transparent
  Show Answer
  The correct answer is A.
• Question 324: Two equal capacitances are connected first in series and then in parallel. The ratio of the effective series capacitance to the effective parallel capacitance is Options:
  A) 0.25
  B) 0.50
  C) 1.00
  D) 2.20
  E) 4.00
  Show Answer
  The correct answer is A.
• Question 325: The motion of the prongs of a sounding turning fork is Options:
  A) circular
  B) oscillatory
  C) random
  D) rotational
  E) translational
  Show Answer
  The correct answer is B.
• Question 326: For which of the following sets are the units fundamental? Options:
  A) Area, length and volume
  B) Impulse, mass and time
  C) Length, time and mass
  D) Velocity, distance and time
  E) Volume, mass and density
  Show Answer
  The correct answer is C.
• Question 327: How much heat is required to convert 50g of water at 100°C to steam at the same temperature? (Specific latent heat of vaporization of water = 2260 Jg^-11) Options:
  A) 1.13 × 10^-4J
  B) 1.31 × 10²J
  C) 1.30 × 10⁴J
  D) 1.13 × 10⁵J
  E) 1.31 × 10⁶J
  Show Answer
  The correct answer is D.
• Question 328: Which of the following radiations have the longest wavelength? Options:
  A) Gamma rays
  B) Infra-red
  C) Light waves
  D) Radio waves
  E) Ultra-violet rays
  Show Answer
  The correct answer is D.
• Question 329: Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the Options:
  A) breaking point
  B) elastic limit
  C) plastic limit
  D) stress limit
  E) yield point
  Show Answer
  The correct answer is B.
• Question 330: Which of the following instruments can be used to measure e.m.f. most accurately. Options:
  A) Ammeter
  B) Galvanometer
  C) Metre bridge
  D) Potentiometer
  E) Voltmeter
  Show Answer
  The correct answer is D.