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 261: The electrochemical equivalent of platinum is 5.0 x 10^-7kgC^-1 to plate-out 1.0kg of platinum, a current of 100A must be passed through an appropriate vessel for Options:
  A) 5.6 hours
  B) 56 hours
  C) 1.4 x 10^{4 hours}
  D) 2.0 x 10^{4 hours}
  Show Answer
  The correct answer is A .
• Question 262: A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is? Options:
  A) R < r
  B) R = r
  C) R = 2r
  D) R > r
  Show Answer
  The correct answer is B .
• Question 263: The external and internal diameter of a tube are measured as (32 ± 2)mm and (21 ± 1)mm respectively. Determine the percentage error in the thickness of the tube. Options:
  A) 27%
  B) 14%
  C) 9%
  D) 3%
  Show Answer
  The correct answer is C .
• Question 264: The most suitable type of mirror used for the construction of the search light is the Options:
  A) concave mirror
  B) convex mirror
  C) spherical mirror
  D) parabolic mirror
  Show Answer
  The correct answer is D .
• Question 265: A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their Options:
  A) frequency
  B) amplitude
  C) direction of vibration of the particles of the medium
  D) period of vibration of the particles of the medium
  Show Answer
  The correct answer is C .
• Question 266: Total internal reflection will not occur when light travels from Options:
  A) water to air
  B) water into glass
  C) glass to air
  D) glass into water
  Show Answer
  The correct answer is B .
• Question 267: what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside? Options:
  A) the glass will break
  B) the glass will shrink
  C) the liquid will rise up in the stem
  D) the liquid will go down in the stem
  Show Answer
  The correct answer is D .
• Question 268:

  A mixture of blue and red pigment when illuminated by white light will appear

  Options:
  A) green
  B) orange
  C) purple
  D) magenta
  Show Answer
  The correct answer is C .
• Question 269:

  A person standing waist-deep in a swimming pool appears to have short legs because of light?

  Options:
  A) diffraction
  B) refraction
  C) reflection
  D) interference
  Show Answer
  The correct answer is B .
• Question 270: A current carrying conductor experiences a force when placed in a magnetic field because the Options:
  A) conductor is magnetized
  B) magnetic field of the current interacts with external magnetic field
  C) force is due to the motor principle
  D) electric field of the current interacts with the external magnetic field
  Show Answer
  The correct answer is B .