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 1101: The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40hz and 180Hz? Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is B .
• Question 1102:

  

  For a rough inclined plane on which lies a body of weight W, the angle θ in the diagram above becomes the angle of friction if

  Options:
  A) tan θ = coefficient of static friction
  B) cos θ = coefficient of dynamic friction
  C) sin θ = coefficient of sliding friction
  D) sec θ = limiting frictional force
  Show Answer
  The correct answer is A .
• Question 1103: A trough 12.0cm deep is filled with water of refractive index $\frac{4}{3}$. By how much would a coin at the bottom of the trough appear to be displaced when viewed vertically from above the water surface? Options:
  A) 3.0cm
  B) 6.0cm
  C) 9.0cm
  D) 16.0cm
  Show Answer
  The correct answer is A .
• Question 1104: Which of the following statements are true in the structure of atoms? Options:
  A) the atoms of the differnt element differ only in the number of protons and electrons
  B) the num,ber of protons equals the number of electrons
  C) atoms are constructed according to the plan of our solar system
  D) all of the above
  E) A and C only
  Show Answer
  The correct answer is B .
• Question 1105:

  The limiting frictional force between two surface depends on

  I. the normal reaction between the surfaces

  II. the area of surface in contact

  III. the relative velocity between the surfaces

  IV. the nature of the surface

  Options:
  A) I only
  B) I and IV only
  C) II only
  D) III only
  Show Answer
  The correct answer is B .
• Question 1106: A glass plate 0.9cm thick has a reflective index of 1.50. how long does it take for a pulse of light to pass through the plate?
  [c = 3.0 x ⁸ ms^-1] Options:
  A) 4.5 x 10^-11s
  B) 4.5 x 10^-10s
  C) 4 .5 x 10^-12 s
  D) 3.0 x 10^-10s
  Show Answer
  The correct answer is C .
• Question 1107:

  

  If the fig above E is an accumulator with negligible internal resistance. and the EMF 9.0V, The the total current is

  Options:
  A) 0.3A
  B) 0.8A
  C) 1.0A
  D) 1.8A
  Show Answer
  The correct answer is C .
• Question 1108: A radioactive substance has a half-life of 20 days what fraction the original radiation nuclei will remain after 80 days? Options:
  A) (1)/32
  B) (1)/16
  C) (1)/ 8
  D) (1)/4
  Show Answer
  The correct answer is B .
• Question 1109:

  

  In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V 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 1110: In a resonance tube experiment, if the fundamental frequency of the vibrating air column is 280Hz, the frequency of the third overtone is Options:
  A) 70Hz
  B) 840Hz
  C) 1120Hz
  D) 1960Hz
  Show Answer
  The correct answer is D .