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 621:

  The mass of a nucleus is the

  Options:
  A) total number of its proton and neutrons
  B) number of its protons
  C) mass of its electrons
  D) total number of its protons and electrons
  Show Answer
  The correct answer is A .
• Question 622: After three half lifes, the fraction of a radioactive material that has decayed is Options:
  A) $\frac{1}{8}$
  B) $\frac{1}{3}$
  C) $\frac{2}{3}$
  D) $\frac{7}{8}$
  Show Answer
  The correct answer is D .
• Question 623:

  The eclipse of the moon occurs when?

  Options:
  A) the moon reflects the rays from the sun to the earth
  B) the moon comes exactly between the earth and the sun
  C) the earth comes exactly between the moon and the sun
  D) the sun comes exactly between the earth and the moon
  Show Answer
  The correct answer is C .
• Question 624: The motion of smoke particles from a chimney is typical of? Options:
  A) random motion
  B) circular motion
  C) rotational motion
  D) oscillatory motion
  Show Answer
  The correct answer is A .
• Question 625: A quantity of ice at 10^oC is heated until the temperature of the heating vessel is 90^oC. Which of the following constants is NOT required to determine the quantity of heat supplied to the vessel? Options:
  A) specific heat capacity of ice
  B) specific heat capacity of water
  C) specific latent heat of fusion
  D) specific latent heat of vaporization
  Show Answer
  The correct answer is D .
• Question 626: In alternating current theory, the units of impedance, r.m.s. voltage and resonance frequency are respectively equal to Options:
  A) volt, ampere and hertz
  B) ohms, volt and hertz
  C) watt, ohms and radian
  D) ohms, hertz and joule
  Show Answer
  The correct answer is B .
• Question 627:

  A gas at a volume of V${}_0$ in a container at pressure p${}_0$ is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?

  Options:
  A) $\frac{p_0}{5}$
  B) $\frac{4p_0}{5}$
  C) p${}_0$
  D) 5P${}_0$
  Show Answer
  The correct answer is D .
• Question 628: Which of the following represents the correct precision if the length of a piece of wire is measured with a meter rule? Options:
  A) 35mm
  B) 35.0mm
  C) 35.00mm
  D) 35.01mm
  Show Answer
  The correct answer is A .
• Question 629: The relationship between L and the wavelength I of the stationary wave is Options:
  A) 2L = $\lambda$
  B) L = $\lambda$
  C) L = $\frac{\lambda }{3}$
  D) 4L = 3 $\lambda$
  Show Answer
  The correct answer is D .
• Question 630: Total internal reflection occurs when light moves from Options:
  A) a dense medium to a less dense medium
  B) air to water
  C) water to glass
  D) a less dense to a dense medium
  Show Answer
  The correct answer is A .