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 761:

  The rate of diffusion of gases increases with increase(s) in I. density

  II. temperature

  III, mass. Which is/are correct?

  Options:
  A) I only
  B) II only
  C) I and II only
  D) II and III only
  E) I, II and III
  Show Answer
  The correct answer is B .
• Question 762: A stone is dropped from the top of a tower of height 11 .25m. Calculate the time it will take to reach the ground. [g = 10ms-2] Options:
  A) 1.00s
  B) 1.50s
  C) 2.25s
  D) 2.50s
  E) 3.00s
  Show Answer
  The correct answer is B .
• Question 763: If the distance between the object and the pinhole of a pinhole camera is reduced by half the size of the image of the object Options:
  A) Is quadrupled
  B) Is halved
  C) Remains the same
  D) Is double
  Show Answer
  The correct answer is D .
• Question 764:

  If the frequency of an emitted x-ray is 1.6 x 10¹⁶Hz, the accelerating potential is?

  [e = 1.6 x 10^-19C, h = 6.63 x 10^-34Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .
• Question 765: The following are derived units EXCEPT Options:
  A) kg m^-3
  B) N
  C) Ns
  D) m³
  E) kg
  Show Answer
  The correct answer is E .
• Question 766: Which of the following is the most suitable for use as an altimeter? Options:
  A) A mecury barometer
  B) A fortin barometer
  C) A mecury manometer
  D) An aneroid barometer
  Show Answer
  The correct answer is D .
• Question 767: 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 768: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 769: Which of the following pairs of colours gives the widest separation in the spectrum of white light? Options:
  A) Red and Violet
  B) Green and Yellow
  C) Red and Indigo
  D) Yellow and Violet
  Show Answer
  The correct answer is A .
• Question 770:

  

  The value of the series resistor required to convert the above galvanometer into a voltmeter with a full range deflection of 15V is

  Options:
  A) 985 ohms
  B) 990 ohms
  C) 995 ohms
  D) 1000 ohms
  E) 1005 ohms
  Show Answer
  The correct answer is C .