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 421: An electric iron rated 250 V has a coil of resistance 125Ω. What is the cost of using it for I hour at 10k per kWh? Options:
  A) 1.25k
  B) 2.50k
  C) 5.00k
  D) 10.00k
  E) 20.00k
  Show Answer
  The correct answer is C.
• Question 422: If the first position of resonance in a resonance tube is 18.0cm from the open end, the distance from the open end to the next position of resonance will be Options:
  A) 24.0cm
  B) 27.0cm
  C) 36.0cm
  D) 45.0cm
  E) 54.0cm
  Show Answer
  The correct answer is E.
• Question 423: Calculate the peak voltage of a mains supply of r.ms. value 220V. Options:
  A) 121 V
  B) 156 V
  C) 225 V
  D) 240 V
  E) 311 V
  Show Answer
  The correct answer is E.
• Question 424:

  The clinical thermometer differs from other mercury-in-glass thermometers because it has I. a constriction

  II. a wide range

  III. a short range

  IV. a narrow bore. Which of the above are correct?

  Options:
  A) I and II only
  B) I and III only
  C) III and IV only
  D) I,II and III only
  E) I, III and IV only
  Show Answer
  The correct answer is B.
• Question 425: If a positively charged glass-rod is used to charge an electroscope X by contact and an electroscope Y by induction, then Options:
  A) X and Y will be negatively charge
  B) X and Y will be positively charged
  C) X will be negatively charged and Y positively charged
  D) X will be positively charged and Y negatively charged
  E) X will be positively charged and Y will remain uncharged
  Show Answer
  The correct answer is D.
• Question 426: A wave travels a distance of 20 cm in 3s. The distance between successive crests of the wave is 4cm. What is the frequency of the wave? Options:
  A) 0.60Hz
  B) 1.67Hz
  C) 7.50Hz
  D) 15.00Hz
  E) 26.67Hz
  Show Answer
  The correct answer is B.
• Question 427: The unit of inductance is Options:
  A) Weber
  B) Telsa
  C) Hertz
  D) Henry
  E) Farad
  Show Answer
  The correct answer is D.
• Question 428: A man at the back of a crowd watches a parade by holding a plane mirror just above his head. The parade passes 6 metres behinde his head and the mirror is 0.25m in front of the man. How far does the image in the mirror appear to be from the man? Options:
  A) 6.50m
  B) 6.25m
  C) 6.00m
  D) 5.75m
  E) 5.50m
  Show Answer
  The correct answer is A.
• Question 429: A solid weights 5.0 N in air, 4.2 N in water and 4.4 N in liquid Y. Calculate the relative density of liquid Y. Options:
  A) 0.75
  B) 0.88
  C) 0.95
  D) 1.13
  E) 1.33
  Show Answer
  The correct answer is A.
• Question 430: Two forces forming a couple are separated by a distance of 25cm. If one of the forces equals 40N, what is the moment of the couple? Options:
  A) 1000 Nm
  B) 500 Nm
  C) 10 Nm
  D) 5 Nm
  E) 1.6 Nm
  Show Answer
  The correct answer is C.