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 2071:

  Natural radioactivity consists of emission?

  Options:
  A) $\alpha$-particles and $\beta$-rays
  B) $\alpha$-particles and X-rays
  C) $\gamma$-ray and X-rays
  D) $\alpha$-particles and $\beta$-rays and $\gamma$-rays
  Show Answer
  The correct answer is D .
• Question 2072: A thin film of liquid is trapped between two glass plates. The force required to pull the plates apart will increase if the Options:
  A) surface tension of the liquid is reduced
  B) perpendicular distance between the plates is increased
  C) area of the liquid surface in contact with the plates is increased
  D) pressure of the air is decreased
  Show Answer
  The correct answer is C .
• Question 2073: If the distance from a point source of sound is doubled, by what factor does the intensity decrease? Options:
  A) 4.00
  B) 2.00
  C) 0.50
  D) 0.25
  Show Answer
  The correct answer is A .
• Question 2074: an object 1cm high placed on the axis 15cm from a converging lens forms an image 30cm from the lens. The size of the image is Options:
  A) 0.5cm
  B) 1.5cm
  C) 3cm
  D) 2.5m
  E) 2cm
  Show Answer
  The correct answer is E .
• Question 2075:

  If 16mA of current flows through a conductor in one second, the number of electron transported per seconds is

  [1 electronic charge = 1.6 x 10^-19C]

  Options:
  A) 1.00 x 10²⁰
  B) 2.56 x 10^-18
  C) 2.56 x ^-17
  D) 1.00 x 10¹⁷
  Show Answer
  The correct answer is D .
• Question 2076: A heavy object is suspended from a string and lowered into water so that it is completely submerged. The object appears lighter because Options:
  A) the density of water is less than that of the object
  B) the pressure is low just below the water surface
  C) it experiences an upthrust
  D) the tension in the string neutralizes part of the weight
  Show Answer
  The correct answer is C .
• Question 2077: Which of the following is in a neutral equilibrium? Options:
  A) a heavy weight suspended on a string
  B) a cone resting on its slant edge
  C) a heavy-based table lamp
  D) the beam of a balance in use
  Show Answer
  The correct answer is B .
• Question 2078: Am elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is Options:
  A) 12cm
  B) 20cm
  C) 18cm
  D) 15cm
  Show Answer
  The correct answer is C .
• Question 2079:

  

  In the diagram above, the direction of the force between N and S in the magnetic field is

  Options:
  A) MP
  B) SN
  C) NS
  D) PM
  Show Answer
  The correct answer is C .
• Question 2080: For semi conductor to have negative temperature coefficient of resistance implies that Options:
  A) their resistance decrease with temperature
  B) The resistance increase with temperature
  C) their resistance is constantly changing with temperature
  D) they have electrons and holes at high temperature
  Show Answer
  The correct answer is A .