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 451: 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 452: 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 453: 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 454: 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 455: The term torque means Options:
  A) the equilibrant of two concurrent forces
  B) the moment of a force about an ads
  C) the resultant of several forces acting on a body in equilibrium
  D) two coplanar forces at right angle to each other
  E) two equal and opposite forces whose lines of action do not coincide
  Show Answer
  The correct answer is B.
• Question 456: The lower and upper fixed points of a mercury-in-glass thermometer are marked X and 180 mm respectively. On a particular day the mercury meniscus in the thermometer rises to 60mm. If the corresponding reading on a Celsius scale is 20 ° C, what is the value X? Options:
  A) 6.0mm
  B) 18.0mm
  C) 30.0mm
  D) 60.0mm
  E) 120.0mm
  Show Answer
  The correct answer is C.
• Question 457: A waterfall is 6.30m high. What is the change in temperature of a quantity of water that falls from the top to the bottom of the waterfall? (Neglect heat losses to the surroundings, take g as 10 ms^-2 and specific heat capacity of weather as 4200,J kg^-1K^-1 Options:
  A) 0.15°C
  B) 1.50°C
  C) 15.00°C
  D) 21.00 °C
  E) 50.00°C
  Show Answer
  The correct answer is B.
• Question 458: A waterfall is 1.260m high. Calculate the change in temperature of a quantity of water that falls from the top to the bottom of the waterfall. (Neglect heat losses to the surroundings, take g as 10m^-2 and specific heat capacity of water as 4200Jkg^-1K^-1) Options:
  A) 0.3^oC
  B) 3.0^oC
  C) 33.3^oC
  D) 42.0^oC
  E) 100.0^oC
  Show Answer
  The correct answer is B.
• Question 459: The lower and upper fixed points of a mecury-in-glass thermometer are marked Y and 180mm respectively. On a particular the mecury meniscus in the thermometer rises to 45mm. If the corresponding reading on a scale is 10^o, calculate the value of Y. Options:
  A) 4mm
  B) 18mm
  C) 30mm
  D) 135mm
  E) 450mm
  Show Answer
  The correct answer is C.
• Question 460: 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.