Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

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 961: The carbon-granules microphone works on the principle of change in Options:
  A) inductance
  B) resistance
  C) capacitance
  D) voltage
  Show Answer
  The correct answer is B .
• Question 962:

  Which of these isa second-class lever?

  Options:
  A) sugar tongs
  B) claw hammer
  C) plier
  D) wheelbarrow
  Show Answer
  The correct answer is D .
• Question 963:

  

  The diagram above represents the field pattern obtained by bringing the poles of two magnets together.The poles must be

  Options:
  A) S-S poles
  B) S-N poles
  C) N-S poles
  D) N-N poles
  Show Answer
  The correct answer is A .
• Question 964:

  A ship travelling towards a cliff receives the echo of its whistle after 3.5 seconds. A short while later, it receives the echo after 2.5 seconds. If the speed of sound in air under the prevalling condition is 250ms-1, how much closer is the ship to the cliff?

  Options:
  A) 10m
  B) 350m
  C) 175m
  D) 125m
  Show Answer
  The correct answer is D .
• Question 965:

  A certain radioactive source emits radiation that was found to be deflected by both magneticand electric fields. The radiation is?

  Options:
  A) beta rays
  B) gamma rays
  C) x-rays
  D) ultra-violet rays
  Show Answer
  The correct answer is A .
• Question 966:

  The equation of a wave travelling along the positive x-direction is given by;

  Y = 0.25 x 10^-3 sin (500t - 0.025x).

  Determine the angular frequency of the wave motion.

  Options:
  A) 0.25 x 10^-3rad s^-1
  B) 0.25 x 10^-1rad s^-1
  C) 5.00 x 10²rad s^-1
  D) 2.50 x 10³rad s^-1
  Show Answer
  The correct answer is C .
• Question 967: What is the apparent colour of a RED SHIRT when viewed in PURE green light? Options:
  A) Red
  B) Green
  C) Yellow
  D) Black
  E) Blue
  Show Answer
  The correct answer is D .
• Question 968: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads? Options:
  A) o
  B) $\frac{1}{2}$
  C) 2
  D) 8
  E) 32
  Show Answer
  The correct answer is D .
• Question 969: The absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The refractive index at the interface when a ray travels from water to glass is Options:
  A) $\frac{1}{2}$
  B) $\frac{8}{9}$
  C) $\frac{9}{8}$
  D) $\frac{17}{12}$
  E) 2
  Show Answer
  The correct answer is C .
• Question 970: Which of the following statements is TRUE of photoelectric effect? Options:
  A) it cannot occur in liquids
  B) the energy of the emitted electrons is independent of the work function of the surface
  C) the energy of the emitted electron depends on the wavelength of the incident light
  D) the greater the intensity of the incuident light, the greater the incident of the emitted electron
  Show Answer
  The correct answer is A .