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 111: If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric field intensity of the field is Options:
  A) 0.8
  B) 0.8N/C
  C) 20.0N/C
  D) 4.2N/C
  E) 20.0N/C
  Show Answer
  The correct answer is C .
• Question 112: In photoelectric effect, electrons will leave the metal surface when illuminated by light of appropriate frequency if the photon energy is Options:
  A) greater than the work function
  B) less than the work function
  C) equal to the work function
  D) equal to the maximium kinetic energy of the electron
  Show Answer
  The correct answer is A .
• Question 113:

  

  Find the tension T1 in the diagram above if the system is in equilibrium. [G = 10ms^-2]

  Options:
  A) 200/√3N
  B) 100/√3N
  C) 300/√3N
  D) 100N
  Show Answer
  The correct answer is B .
• Question 114: A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule? Options:
  A) 95cm
  B) 25cm
  C) 20cm
  D) 5cm
  Show Answer
  The correct answer is B .
• Question 115: The energy E of a photon and it's wavelength are related by Eλ = X. the numerical value of X is?
  [h = 6.63 x 10^-34js, c = 3 x 10⁸ ms^-1] Options:
  A) 6.6 X 10^-28
  B) 1.99 X 10^-27
  C) 6.60 x 10^-26
  D) 1.99 x 10^-25
  Show Answer
  The correct answer is D .
• Question 116: Which of the following phenomena explains the fact that a house whose roof is coated with white paint will be cooler in the hot season than one coated with black paint ? Options:
  A) conduction
  B) convection
  C) refraction
  D) reflection
  Show Answer
  The correct answer is D .
• Question 117: The normal temperature of human body is record at what ranges? Options:
  A) 27°C to 43°C
  B) 30°C to 40°
  C) 98.4°C only
  D) Between 35°C to 37°C
  Show Answer
  The correct answer is D .
• Question 118:

  The mercury column in the barometer at notational atmospheric pressure has a height of?

  Options:
  A) 0.76 cm at see level
  B) 760 cm at sea level
  C) 7.6 cm at sea level
  D) 76 cm at sea level
  Show Answer
  The correct answer is D .
• Question 119: Which of the following are true about the infra-red radiation? i. it is invisible ii. it is called heat ray iii. its frequency is higher than that of blue light iv. it travels as a transverse wave Options:
  A) i, ii, iii and iv
  B) i, ii, iv only
  C) i, iii, iv only
  D) ii, iii, iv only
  Show Answer
  The correct answer is B .
• Question 120:

  If the fraction of the atoms of a radioactive material left after 120 years is 1/64, what is the half-life of the material?

  Options:
  A) 24 years
  B) 20 years
  C) 10 years
  D) 2 years
  Show Answer
  The correct answer is B .