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 621:

  Musical instruments playing the same note can be distinguished from one another owing to the difference in their

  Options:
  A) quality
  B) pitch
  C) intensity
  D) loudness
  Show Answer
  The correct answer is A .
• Question 622: What is the speed of a particle of mass 10^-27kg whose wavelength is 10^-8m.[h = 6.63 x 10^-34Js] Options:
  A) 6.63ms^-1
  B) 66.30ms^-1
  C) 663.00ms^-1
  D) 6630.00ms^-1
  Show Answer
  The correct answer is B .
• Question 623: A current flows in a series circuit containing a resistor, R, an inductor, L and a capacitor, C. Which of the following is true of the power dissipated in the circuit component(s)? Options:
  A) The power dissipated in L is greater than zero
  B) The power dissipated in R is zero
  C) The sum of the power dissipated in L and C is equal to that in R
  D) The sum of the power dissipated in L and C is greater than in R
  E) The sum of the power dissipated in L and C is zero
  Show Answer
  The correct answer is E .
• Question 624: Which of the following properties is NOT exhibited by sound waves? Options:
  A) Diffraction
  B) interference
  C) Polarisation
  D) Reflection
  E) Refraction
  Show Answer
  The correct answer is C .
• Question 625: The phenomenon of photoelectric effect is NOT used in Options:
  A) automatic doors
  B) bimetallic strip thermometers
  C) light meters in cameras
  D) setting off burglar alarms
  E) sound production from film tracks.
  Show Answer
  The correct answer is B .
• Question 626: What are the units of thermal conductivity? Options:
  A) kg.m.sec²
  B) Joule sec^-1m^-1k^-1
  C) kg.m
  D) Newton sec^-1m²
  E) m³
  Show Answer
  The correct answer is B .
• Question 627: 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 628:

  The time rate of loss of heat by a body is proportional to the

  Options:
  A) temperature of its surroundings
  B) temperature of the body
  C) difference in temperature between the body and its surroundings
  D) ratio of the temperature of the body to that of its surroundings
  Show Answer
  The correct answer is C .
• Question 629: Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? Options:
  A) ${}_{28}^{58}X$
  B) ${}_{28}^{30}X$
  C) ${}_{30}^{28}X$
  D) ${}_{30}^{58}X$
  Show Answer
  The correct answer is A .
• Question 630: A machine gun with a mass of 5kg fires a 50g bullet at speed of 100ms^-1. The recoil speed of the machine gun is Options:
  A) 0.5 msec^-1
  B) 1.5 msec^-1
  C) 1 msec^-1
  D) 2 msec^-1
  E) 4 msec^-1
  Show Answer
  The correct answer is C .