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 161:

  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 162:

  Two divers G and H are at depths 20m and 40m, respectively below the water surface in a lake. The pressure on G is p${}_1$ while the pressure on H is P${}_2$, If the atmospheric pressure is equivalent to 10mof water, then the value of P${}_2$/P${}_1$ is?

  Options:
  A) 0.50
  B) 0.60
  C) 1.67
  D) 2.00
  Show Answer
  The correct answer is C .
• Question 163: The volume of a fixed mass of gas is 10cm³ when its pressure is 400cmHg. Determine the volume of the gas when its pressure is 200cmHg. Options:
  A) 30cm³
  B) 40cm³
  C) 50cm³
  D) 20cm³
  Show Answer
  The correct answer is D .
• Question 164: When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off. Options:
  A) 4.50ms^-1
  B) 11.25ms^-1
  C) 20.00ms^-1
  D) 45.00ms^-1
  Show Answer
  The correct answer is C .
• Question 165: In comparing the camera and the human eye, the film of the camera function as the Options:
  A) retina
  B) iris
  C) cornea
  D) pupil
  Show Answer
  The correct answer is A .
• Question 166:

  

  In the circuit above, The potential across each capacitor is 100V. The total energy stored in the two capacitors is

  Options:
  A) 3.0 x 10⁴J
  B) 3.0 x 10²J
  C) 2.5 x 10^-2J
  D) 6.0 x 10^-3J
  Show Answer
  The correct answer is C .
• Question 167: A heating coil rated at 100W is used to boil off 0.5kg of boiling water. The time taken to boil off the water is [specific latent heat of vaporization of water = 2.3 x 10⁶Jkg^-1] Options:
  A) 1.15 x 10⁹ s
  B) 1.15 x 10⁷ s
  C) 1.15 x 10⁵ s
  D) 1.15 x 10⁴ s
  Show Answer
  The correct answer is D .
• Question 168:

  Any line or section taken through an advancing wave in which all the particles are in the same phase is called the

  Options:
  A) wavelength
  B) wave coast
  C) wave trough
  D) wave front
  Show Answer
  The correct answer is D .
• Question 169:

  

  In the network shown above, determine the potential difference across the 5µF capacitor

  Options:
  A) 3V
  B) 6V
  C) 12V
  D) 18V
  Show Answer
  The correct answer is D .
• Question 170:

  

  The phase difference between waves P and q in the diagram above is

  Options:
  A) 2π
  B) π
  C) ^π/₄
  D) ^π/₂
  Show Answer
  The correct answer is D .