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 411: A boy moving with a velocity of 3 ms^-1 is brought to rest by a constant force after travelling 15m. Calculate the retardation. Options:
  A) 0.15ms^-2
  B) 0.30ms^-2
  C) 0.60ms^-2
  D) 3.33ms^-2
  E) 6.66ms^-2
  Show Answer
  The correct answer is B.
• Question 412: A block of a substance X will sink in a liquid V but float liquid Z. Which of the following statements is NOT correct about the densities of the three substances? Options:
  A) Density of liquid Z is greater than that of X
  B) Density of liquid V is less than that of liquid X
  C) Density of liquid Y is less than that of liquid Z
  D) Liquid Z has the greatest density of all the three substances.
  E) If liquids Y and Z do not mix, liquid Z will float on liquid Y.
  Show Answer
  The correct answer is E.
• Question 413:

  I. A scalar quantity has only magnitude

  II. A scalar quantity has both magnitude and direction

  III. A vector quantity has both magnitude and direction

  IV. A vector quantity has only magnitude.Which of the above statement is/are correct?

  Options:
  A) I only
  B) l and II only
  C) l and III only
  D) II and III only
  E) II and III only
  Show Answer
  The correct answer is C.
• Question 414: An electric bell operated within an evacuated bell jar enables us to infer correctly that Options:
  A) light waves require a medium for transmission
  B) sound waves do not require a medium for transmission
  C) light waves do not require a medium for transmission but sound waves do
  D) light waves travel much faster than sound waves
  E) light waves and sound waves travel at the same speed
  Show Answer
  The correct answer is C.
• Question 415: The image obtained on the screen of a pin-hole camera becomes less sharply defined when the Options:
  A) object is moved farther from the pin-hole
  B) screen is moved farther from the pin-hole
  C) object is made smaller
  D) illumination is made more intense
  E) pin-hole is made larger.
  Show Answer
  The correct answer is E.
• Question 416: Which of the following statements about evaporation and boiling is FALSE? Options:
  A) Evaporation may take place at any temperature.
  B) In evaporation, vapour escapes only from the surface of a liquid
  C) The temperature remains constant as long as the liquid is boiling
  D) The temperature at which boiling takes place can be altered by changing the external pressure
  E) The rate of evaporation does not depend on temperature.
  Show Answer
  The correct answer is E.
• Question 417:

  The smallest unit on the sleeve of a micrometer screw gauge is 0.5mm. There are fifty divisions on the thimble of the screw gauge.

  What is the smallest length that can be measured with this instrument?

  Options:
  A) 0.05cm
  B) 0.01cm
  C) 0.005cm
  D) 0.001cm
  E) 0.0001cm
  Show Answer
  The correct answer is D.
• Question 418: Two 2.0Ω resistors can be combined circuit to give an overall resistance of Options:
  A) 0.5Ω only
  B) 1.0 Ω only
  C) either 0,5Ω or 1.0 Ω
  D) either 1.0Ω or 4.0 Ω
  E) either 0.5Ω, 1.0Ω or 4.0Ω
  Show Answer
  The correct answer is D.
• Question 419: An astronomical telescope which is being used to view a very distant object is said to be in normal adjustment if Options:
  A) the final image is at the near-point
  B) the image formed by the objective is before the focus of the eye piece
  C) the angular magnification is the ratio of the focal length of the eye-piece lens to that of the objective
  D) the foci dl the objective and the eye-piece coincide between the lenses
  E) the distance between the objective lens and the eye-piece is equal to the difference between their focal lengths.
  Show Answer
  The correct answer is D.
• Question 420: The image is a plane mirror is Options:
  A) inverted, real with a magnificant of $\frac{1}{2}$
  B) inverted, virtual with a magnification of 1
  C) inverted, real with a magnification of 2
  D) upright, virtual with a magnificent of 1
  E) upright, real with a magnification of 2
  Show Answer
  The correct answer is D.