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 811: Which of the following statements is true of a body which is moving in a straight line with uniform acceleration? The velocity of the body Options:
  A) is also uniform
  B) must always be zero when the body stops accelerating
  C) will increase with time in the direction of the acceleration
  D) is equal to the quotient of distance travelled and time
  E) is the product of the distance travelled and time
  Show Answer
  The correct answer is C .
• Question 812: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 813:

  The following are some units

  I. Ns

  II. Non

  III. Nm${}^{-2}$

  IV. J°K${}^{-1}$

  V. JKj${}^{-1}$

  What are the units of latent heat?

  Options:
  A) I
  B) II
  C) III
  D) V
  Show Answer
  The correct answer is D .
• Question 814: Which of the following statements supports the assumption that light travels in straight lines? Options:
  A) light can be diffracted
  B) a source of light produces distinct shadows of opaque objects
  C) a source of light produces interference patterns on a suitably placed screen
  D) light can be reflected
  Show Answer
  The correct answer is B .
• Question 815: The equation P^aV^bT^c= constant reduces to Charles Law if Options:
  A) a=1, b=1and c=0
  B) a=1, b=0 and c=-1
  C) a=0, b=1 and c=1
  D) a=0, b=1 and c=-1
  Show Answer
  The correct answer is D .
• Question 816: The percentage of the original nuclei of the sample of a radioactive substance left after 5 half - lives is Options:
  A) 8%
  B) 5%
  C) 3%
  D) 1%
  Show Answer
  The correct answer is C .
• Question 817: An inclined plane which makes an angle of 30^o with the horizontal has a velocity ratio of Options:
  A) 2
  B) 1
  C) 0.866
  D) 0.50
  Show Answer
  The correct answer is A .
• Question 818: A solid weighs 4.8g in air, 2.8g in water and 3.2g in kerosine. The ratio of density of the solid to that of the kerosine is Options:
  A) 12
  B) 3
  C) 2
  D) $\frac{3}{2}$
  E) $\frac{5}{4}$
  Show Answer
  The correct answer is B .
• Question 819: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 820: When a box of mass 45kg, is given an initial speed of 5ms^-1 it slides along a horizontal floor a distance of 3m before coming to a rest. what is the coefficient of kinetic friction between the box and the floor? (G = 10ms^-2) Options:
  A) $\frac{5}{6}$
  B) $\frac{5}{12}$
  C) $\frac{1}{3}$
  D) $\frac{2}{3}$
  Show Answer
  The correct answer is B .