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 1431: In a common emitter configuration, the output voltage is through the Options:
  A) Resistor
  B) Base
  C) Collector
  D) Emitter
  Show Answer
  The correct answer is D .
• Question 1432:

  The equation of a wave traveling along the positive x-direction is given by; y = 0.25 x 10${}^{-3}$ sin (500t - 0.025x). Determine the angular velocityof the wave motion.

  Options:
  A) 0.25 x 10${}^{-3}$rads${}^{-1}$
  B) 0.25 x 10${}^{-1}$rads${}^{-1}$
  C) 5.00 x 10${}^2$rads${}^{-1}$
  D) 2.50 x 10${}^3$rads${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 1433:

  What quantity of heat is required to convert 20 g of ice at 0 ºC to water at the same temperature? (Specific latent heat of ice = 336 Jg${}^{-1}$)

  Options:
  A) 7.06 x 10${}^3$J
  B) 5.38 x 10${}^3$J
  C) 6.72 x 10${}^3$J
  D) 1.35 x 10${}^3$J
  Show Answer
  The correct answer is C .
• Question 1434: To produce a parallel beam of light from a concave mirror, the distance at a which the lamp should be placed from the mirror is equal to Options:
  A) the focal length
  B) two times the focal length
  C) the distance of the image
  D) two times the radius of curvature
  Show Answer
  The correct answer is A .
• Question 1435: When the vapour of a substance is in equilibrium with its own liquid, it is said to be Options:
  A) gaseous
  B) unsaturated
  C) liquefied
  D) diffused
  E) saturated
  Show Answer
  The correct answer is E .
• Question 1436: A metal cube of volume 10³mm³ is lowered into a measuring cylinder containing water. If the internal cross-sectional area of the cylinder is 1.5 x 10²mm², by how much does the water level rise in the cylinder? Options:
  A) 6.67 x 10⁰mm
  B) 8.50 x 10²mm
  C) 1.15 x 10³mm
  D) 2.50 x 10³mm
  E) 1.50 x 10⁵mm
  Show Answer
  The correct answer is A .
• Question 1437: The force on a current carrying conductor in a magnetic field is greatest when the Options:
  A) conductor makes an angle of 60° with the field
  B) force is idependent of the angles between the fields and the conductor
  C) conductor is parallel with the field
  D) conductor is at right angle with the field
  Show Answer
  The correct answer is D .
• Question 1438: The note produced by a stretched string has a fundamental frequency of 400Hz. If the length of the string is doubled while the tension in the string is increased by a factor of 4, the frequency is Options:
  A) 200Hz
  B) 400Hz
  C) 800Hz
  D) 1600Hz
  Show Answer
  The correct answer is B .
• Question 1439: A mango fruit drops from a branch 10m above the ground, just before hitting the ground its velocity is (g = 10ms^-2) Options:
  A) 10√2ms^-1
  B) 10ms^-1
  C) 100ms^-1
  D) 5√2ms^-1
  E) 200ms^-1
  Show Answer
  The correct answer is A .
• Question 1440: In a nuclear fusion experiment, the loss of mass amounts to 1.0 x 10^-6kg. The amount of energy obtained from the fusion is Options:
  A) 3.0 x 10^-4J
  B) 3.0 x 10^-1J
  C) 9.0 x 10⁴J
  D) 9.0 x 10¹⁰J
  Show Answer
  The correct answer is D .