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 2181:
  

  In the diagram above, if the south poles of two magnets stroke a steel bar, the polarities at X and Y will respectively be

  Options:
  A) south and north
  B) north and south
  C) north and north
  D) south and south
  Show Answer
  The correct answer is C .
• Question 2182:

  If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be

  Options:
  A) circular
  B) oscillatory
  C) rectilinear
  D) rotational
  Show Answer
  The correct answer is A .
• Question 2183: A ball is thrown vertically into the air with an initial velocity u. What is the greatest height reached? Options:
  A) u2g
  B) $\frac{3u^2}{2g}$
  C) $\frac{u^2}{g}$
  D) $\frac{u^2}{2g}$
  Show Answer
  The correct answer is D .
• Question 2184: When an object is placed very close to the pole of a concave mirror, the virtual image obtained is Options:
  A) diminished and upright
  B) diminished and inverted
  C) enlarged and inverted
  D) enlarged and upright
  Show Answer
  The correct answer is D .
• Question 2185:

  

  The net capacitance in the circuit above is

  Options:
  A) 80µF
  B) 6.0µF
  C) 4.0µF
  D) 2.0µF
  Show Answer
  The correct answer is D .
• Question 2186:

  In semi-conductor, the carriers of current at room temperature are

  Options:
  A) electrons only
  B) electrons and holes
  C) holes only
  D) electron and ions
  Show Answer
  The correct answer is B .
• Question 2187:

  Tha mass of a proton is approximately equal to that of

  Options:
  A) an $\alpha$-particle
  B) a $\beta$-Particle
  C) a neutron
  D) an electron
  Show Answer
  The correct answer is C .
• Question 2188: A light wave of frequency 5 x 10¹⁴Hz moves through water which has a refractive index of $\frac{4}{3}$. Calculate the wavelength in water if the velocity of light in air is 3 x 10⁸ms^-1 Options:
  A) 4.5 x 10^-7m
  B) 6.0 x 10^-7m
  C) 1.7 x 10⁶m
  D) 2.2 x 10⁶m
  Show Answer
  The correct answer is A .
• Question 2189: An equipment whose power is 1500W and resistance is 375 ohms would draw a current of Options:
  A) 0.10A
  B) 2.00A
  C) 4.00A
  D) 77.5A
  Show Answer
  The correct answer is B .
• Question 2190: An element X of an atomic number 88 and mass number 226 decays to form an element Z by emitting two beta particles and an alpha particle. Z is represented by Options:
  A) ${}_{82}^{222}Z$
  B) ${}_{88}^{222}Z$
  C) ${}_{86}^{226}Z$
  D) ${}_{80}^{226}Z$
  Show Answer
  The correct answer is B .