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 101: A wave that travels through stretched strings is known as Options:
  A) electromagnetic wave
  B) micro wave
  C) mechanical wave
  D) seismic wave
  Show Answer
  The correct answer is C .
• Question 102: Why do soldiers march disorderly while crossing a bridge? Options:
  A) To prevent resonance on the bridge
  B) To set the bridge into resonance
  C) To make the b ridge collapse
  D) To spread their weight evenly on the bridge
  Show Answer
  The correct answer is A .
• Question 103:

  

  In the diagram above, the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static friction between the mass m1 and the table is

  Options:
  A) m1/m2
  B) m1g/m2
  C) m2/m1
  D) m2g/m1
  Show Answer
  The correct answer is C .
• Question 104:

  

  For the wave motion represented above, the wavelength is given by

  Options:
  A) p
  B) q
  C) r
  D) s
  E) t
  Show Answer
  The correct answer is D .
• Question 105:

  

  In the above fig, PQ and R are vectors, which of the following options, gives a correct relationship between the vectors

  Options:
  A) P = Q + R
  B) P = Q - R
  C) P = R - Q
  D) P + Q + R = O
  Show Answer
  The correct answer is A .
• Question 106: A 3m³ volume of liquid W of density 200kgm³ is mixed with another liquid L of volume 7m³ and density 150kgm^-3. the density of mixture is? Options:
  A) 165kgm^-3
  B) 100kgm^-3
  C) 265kgm^-3
  D) 350kgm^-3
  Show Answer
  The correct answer is A .
• Question 107: A plane which is Inclined at an angle of 30 ° to the horizontal has a velocity ratio of Options:
  A) 2
  B) 1
  C) 0.87
  D) 0.67
  E) 0.5
  Show Answer
  The correct answer is A .
• Question 108:

  An electron in a hydrogen atom makes a transition from the ground level to the third level. If the energy at the ground level,calculate the energy at the third level.

  [h = 6.6 x 10^-34Js; f = 10¹⁵Hz]

  Options:
  A) 1.41eV
  B) 1.71eV
  C) 1.61eV
  D) 1.51eV
  Show Answer
  The correct answer is D .
• Question 109: The linear expansivity of brass is 2 x 10^-5C^-1. If the volume of a piece of brass is 15.00cm³ at 0⁰C, What is the volume at 100^oC? Options:
  A) 16.03cm³
  B) 16.00cm³
  C) 15.09cm³
  D) 15cm³
  Show Answer
  The correct answer is C .
• Question 110: A step-down transformer has a power output of 50 W and efficiency of 80%. if the mains supply voltage is 200 v, calculate the primary current of the transformer. Options:
  A) 0.31 A
  B) 3.20 A
  C) 3.40 A
  D) 5.00 A
  Show Answer
  The correct answer is A .