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 1511: A bead traveling on a straight wire is brought to rest at 0.2m by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1 determine the work done by the friction Options:
  A) $2\times {10}^{-4}J$
  B) $2\times {10}^{-3}J$
  C) $2\times {10}^{1}J$
  D) $2\times {10}^{2}J$
  Show Answer
  The correct answer is B .
• Question 1512: A bar of initial length /₀ is heated through a temperature change $\mathrm{\Delta }$t to a new length I. The linear expansivity, a, of the bar is Options:
  A) $\frac{/-{/}_o}{/\mathrm{\Delta }t}$
  B) $\frac{/-{/}_o}{{/}_o\mathrm{\Delta }t}$
  C) /_o(1 + $\mathrm{\Delta }$ t)
  D) $\frac{/-{/}_o}{/(1+\mathrm{\Delta }t)}$
  Show Answer
  The correct answer is B .
• Question 1513: Which of the following is a characteristics of stationary waves? Options:
  A) They are formed by two identical waves travelling in opposite directions
  B) they can be transverse or longitudinal
  C) The distance between two successive nodes is one wavelenght
  D) The antinode is a point of minimum displacement
  Show Answer
  The correct answer is A .
• Question 1514: In a good thermos flask, the main cause of heat loss is? Options:
  A) conduction through the cork
  B) the plastic base of the thermos flask
  C) the silvered walls and shiny metals
  D) the outer cover or jacker
  Show Answer
  The correct answer is A .
• Question 1515:

  Which of the following characteristics of a wave is used in the measurement of the depth of the Sea?

  Options:
  A) diffraction
  B) interference
  C) refraction
  D) reflection
  Show Answer
  The correct answer is D .
• Question 1516: Silicon doped with aluminum and germanium doped with arsenic become? Options:
  A) p- and n- types respectively
  B) n- en p- type respectively
  C) p- type semiconductor
  D) n- type semiconductors
  Show Answer
  The correct answer is A .
• Question 1517: Which of these expresses the relationship between the earth’s magnetic field FE, and the field’ FB due to a magnet at neutral points? FE is Options:
  A) equal and opposite to F^B
  B) equal to and in the same direction with F^B
  C) greater than and in the same direction with F_B
  D) greater than and opposite to F_B
  E) less than and opposite to F_B
  Show Answer
  The correct answer is A .
• Question 1518: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 1519: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 1520: The saturated vapour pressure of a liquid increases as the Options:
  A) volume of the liquid increases
  B) volume of the liquid decreases
  C) temperature of the liquid increases
  D) temperature of the liquid decreases
  Show Answer
  The correct answer is C .