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 361: A brass cube of side 10cm is heated through 30°C. If the linear expansivity of brass is 2.0 × I0^-5 K^-1 , what is the increase in its volume? Options:
  A) 0.06 cm³
  B) 0.18cm³
  C) 0.60cm³
  D) 1.20cm³
  E) 1.80cm³
  Show Answer
  The correct answer is E.
• Question 362: Which statement is NOT correct about Rutherford’s model of the atom? Options:
  A) The diameter of the nucleus is of the order of 10-15m
  B) The mass of an atom is concentrated in the nucleus
  C) The model is applicable to atoms with one electron in the outer shell
  D) The nucleus of an atom is positively charged
  E) The nucleus is surrounded by an electron cloud.
  Show Answer
  The correct answer is C.
• Question 363: An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours? Options:
  A) 10k
  B) 50k
  C) N1.00
  D) N5.00
  E) N10.00
  Show Answer
  The correct answer is B.
• Question 364: An object 8cm in front of a plane mirror moves at a speed of 6cm s^-1 away from the mirror. What will be the distance separating the object and the image after 2s? Options:
  A) 8cm
  B) 12cm
  C) 20cm
  D) 28cm
  E) 40cm
  Show Answer
  The correct answer is E.
• Question 365: Which is a fundamental unit? Options:
  A) ampere
  B) joule
  C) Newton
  D) ohm
  E) watt
  Show Answer
  The correct answer is A.
• Question 366: Which device does NOT make use of the magnetic effects of an electric current? Options:
  A) hot-wire ammeter
  B) moving-coil ammeter
  C) moving-coil loudspeaker
  D) moving-iron ammeter
  E) telephone earpiece
  Show Answer
  The correct answer is A.
• Question 367: In an operating X-ray tube, a high p.d is applied between the cathode and the anode for the purpose of Options:
  A) accelerating the electrons to a very high energy
  B) concentrating electrons on the target
  C) heating the anode
  D) heating the cathode
  E) producing a stream of electrons
  Show Answer
  The correct answer is A.
• Question 368: The ability of the eye to focus on objects at various distances is known as Options:
  A) accommodation
  B) astigmatism
  C) eye ring
  D) myopia
  E) presbyopia
  Show Answer
  The correct answer is A.
• Question 369: What part of a camera functions in a similar way to the retina of the eye? Options:
  A) diaphragm
  B) film
  C) focusing ring
  D) lens
  E) shutter
  Show Answer
  The correct answer is B.
• Question 370: The wavelength of a stationary wave is 24.0cm. What is the distance between a node and the next antinodes? Options:
  A) 6.0cm
  B) 12.0cm
  C) 18.0cm
  D) 24.0cm
  E) 48.0cm
  Show Answer
  The correct answer is A.