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 291: The time t₁, t₂ and t₃ for 20 complete oscillations of a simple pendulum experiment are 32.0s, 34.6s and 35.5s respectively. Calculate the mean period of the pendulum. Options:
  A) 1.60s
  B) 1.70s
  C) 1.73s
  D) 1.78s
  E) 5.11s
  Show Answer
  The correct answer is B.
• Question 292: Calculate the magnitude of the electric field intensity in vacuum at a distance of 25cm from a charge of 5 × 10^-3C. [Take 1/4πε₀] Options:
  A) 7.2 × 108NC^-1
  B) 1.8 × 108NC^-1
  C) 5.6 × 108NC^-1
  D) 3.6 × 108NC^-1
  E) 1.5 × 106NC^-1
  Show Answer
  The correct answer is A.
• Question 293:

  Which of the statements about prism binoculars is/are correct? They I. are a pair of two telescopes mounted side by side

  II. reduce the optical path of the light ray from the objective to the eye piece

  III, present inverted and diminished image to the viewer

  IV. present erect and magnified image to the viewer.

  Options:
  A) I only
  B) II only
  C) I and II only
  D) I, II and IV only
  E) II, III and IV only
  Show Answer
  The correct answer is D.
• Question 294: A body of mass 40g loses 80J of heat energy. If the specific heat capacity of the body is 400 Jkg^-1, calculate the change in temperature of the body. Options:
  A) 0.2K
  B) 0.4K
  C) 2.0K
  D) 5.0K
  E) 10.0K
  Show Answer
  The correct answer is D.
• Question 295: A force F is applied to a body P as shown in the diagram above. If the body moves through a distance, a, which of the following represents the work done? Options:
  A) Fa
  B) Fa Cos θ
  C) $\frac{Fa}{\cos \theta }$
  D) FaSin θ
  E) $\frac{Fa}{\sin \theta }$
  Show Answer
  The correct answer is B.
• Question 296: The component of a vector in a given direction is Options:
  A) equal to the magnitude of the resultant vector in that direction
  B) equal to the magnitude of the resultant vector in the opposite direction
  C) its effective magnitude
  D) its effective value in that direction
  E) its effective value in the opposite direction
  Show Answer
  The correct answer is D.
• Question 297: Which of these expresses the relationship between the earth’s magnetic field FE, and the field’ FB due to a magnet at neutral points? FE is Options:
  A) equal and opposite to F^B
  B) equal to and in the same direction with F^B
  C) greater than and in the same direction with F_B
  D) greater than and opposite to F_B
  E) less than and opposite to F_B
  Show Answer
  The correct answer is A.
• Question 298: The general equation of a wave CANNOT be written as Options:
  A) y = A Sin [2 π ($\frac{t}{T}$ ± Xλ)]
  B) y = A Sin [wt ± kx]
  C) y = A Sin [2 $\frac{\pi }{\lambda }$ (vt ± x)]
  D) y = A Sin [2π (ft ± $\frac{X}{\lambda }$ )]
  E) y = A Sin 2 π f(T ± $\frac{X}{\lambda }$)]
  Show Answer
  The correct answer is E.
• Question 299: A voltage supply of 12V r.m.s. and frequency 90Hz is connected to a 4 ω resistor. Calculate the peak value of the current Options:
  A) 48.8 A
  B) 30.0 A
  C) 27.5 A
  D) 4.2 A
  E) 3.0A
  Show Answer
  The correct answer is D.
• Question 300: How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340ms^-1] Options:
  A) 186m
  B) 272m
  C) 544m
  D) 1088m
  E) 2000m
  Show Answer
  The correct answer is B.