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 561: A herdsman yelling out to fellow herdsman heard his voice reflected by cliff 4s later. What is the velocity of sound in air if the cliff is 680m away? Options:
  A) 170ms^-1
  B) 136ms^-1
  C) 340ms^-1
  D) 680ms^-1
  E) 510ms^-1
  Show Answer
  The correct answer is C .
• Question 562:

  Which of the following is NOT a limitation of experimental measurements?

  Options:
  A) Systematic error
  B) Instrument resolution
  C) Random errors
  D) Human error
  Show Answer
  The correct answer is B .
• Question 563: When an a.c. voltage is applied to a capacitor, no power is consumed because the current Options:
  A) leads the voltage by 90°
  B) lags behind the voltage by 90°
  C) and voltage are in phase
  D) and voltage are 180° out of phase
  Show Answer
  The correct answer is A .
• Question 564:

  A semiconductor is formed by?

  Options:
  A) co-ordinate bonds
  B) electrovalent bonds
  C) a substance free of bonds
  D) covalent bonds
  Show Answer
  The correct answer is D .
• Question 565:

  The Earth's magnetic equator passes through Jos in Nigeria. At Jos, the

  Options:
  A) angle of variation is zero
  B) magnetic declination is 90
  C) angle of dip is zero
  D) horizontal component at the Earth's field is zero
  Show Answer
  The correct answer is C .
• Question 566:

  A ball of mass 0.5kg moving at 10ms${}^{-1}$ collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity.

  Options:
  A) 0.2ms${}^{-1}$
  B) 0.5ms${}^{-1}$
  C) 5.0ms${}^{-1}$
  D) 5.5ms${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 567:

  

  A body of mass 10kg on a smooth inclined plane is connected to a smooth pulley to a mass of 15kg as shown above, the acceleration of the system is

  Options:
  A) 1/4g
  B) 8/25g
  C) 1/2g
  D) 2/5g
  E) 3/4g
  Show Answer
  The correct answer is D .
• Question 568: The property of a body to remain at rest or to continue to move in a straight line is known as Options:
  A) force
  B) Impulse
  C) Energy
  D) Inertia
  Show Answer
  The correct answer is D .
• Question 569:

  

  The diagram above shows two capacitors P and Q of capacitance 5μF and 10μF. Find the charges stored in P and Q respectively

  Options:
  A) 2μC and 4μC
  B) 4μC and 2μC
  C) 100μC and 200μC
  D) 200μC and 100μC
  Show Answer
  The correct answer is C .
• Question 570: In a large telecommunications auditorium, perforated absorbent materials are used to line the ceiling so as to Options:
  A) Increase the reverberation of sound in the hall
  B) increase the amount of echo in the hall
  C) reduce the hight of the ceiling from the floor
  D) reduce the reverberation of sound in the hall
  Show Answer
  The correct answer is D .