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 221: 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.
• Question 222: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E.
• Question 223: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D.
• Question 224: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E.
• Question 225: The most suitable instrument for measuring the diameter of a thin wire is a Options:
  A) meter rule
  B) micrometer screw gauge
  C) pair of dividers
  D) pair of engineer’s calipers
  E) venire calipers
  Show Answer
  The correct answer is B.
• Question 226: The wave theory of light does not explain photoelectricity because Options:
  A) light waves carry little energy
  B) particles cannot be emitted by waves
  C) the frequency of light waves too high
  D) there is a threshold wavelength for electron emission
  E) the wavelength of Light waves is too short.
  Show Answer
  The correct answer is A.
• Question 227: A constant force acts on a body of mass 50kg and changes its speed from 20ms^-1 to 90ms^-1 in 10 seconds. Calculate the magnitude of the force applied. Options:
  A) 590N
  B) 500N
  C) 450N
  D) 350N
  E) 180N
  Show Answer
  The correct answer is D.
• Question 228: Which of the following is NOT a component of a slide projector? Options:
  A) Concave mirror
  B) Condenser
  C) Convex mirror
  D) light source
  E) Screen.
  Show Answer
  The correct answer is C.
• Question 229: The motion of the wheel of a bicycle moving on a smooth straight road is Options:
  A) oscillatory and random
  B) oscillatory and translational
  C) rotational and oscillatory
  D) rotational and random
  E) rotational and translational
  Show Answer
  The correct answer is E.
• Question 230: The amplitude of oscillation of a simple pendulum bob diminishes slowly because Options:
  A) energy is applied by some external agencies
  B) frictional forces dissipate the energy of motion
  C) the frequency of oscillation increases with the mass of the bob
  D) the frequency of oscillation varies with time
  E) the period of oscillation varies with time.
  Show Answer
  The correct answer is A.