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 701: 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 702:

  A coil X is moved quickly away from the end Y of a stationary metal bar and a current then flows in X as shown above.

  Then

  Options:
  A) the bar is not a magnet
  B) Y is a north pole
  C) Y is a South pole
  D) Y repels coil X
  Show Answer
  The correct answer is B .
• Question 703: A hydraulic press has a large circular piston of radius 0.8m and a circular plunger of radius 0.2m. A force of 500N is exerted by the plunger. Find the force exerted on the piston Options:
  A) 8000N
  B) 4000N
  C) 2000N
  D) 31N
  Show Answer
  The correct answer is D .
• Question 704:

  Calculate the velocity ratio of a screw jack of pitch 0.2cm if the length of the tommy bar is 23cm

  Options:
  A) 230$\pi$
  B) 23$\pi$
  C) 70$\pi$
  D) 140$\pi$
  Show Answer
  The correct answer is A .
• Question 705: A spectrum of sunlight is said to be impure when Options:
  A) it is made of only three colours
  B) it has no red colour in it
  C) the different colours in it overlap
  D) it does not contain white light
  Show Answer
  The correct answer is C .
• Question 706: When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off. Options:
  A) 4.50ms^-1
  B) 11.25ms^-1
  C) 20.00ms^-1
  D) 45.00ms^-1
  Show Answer
  The correct answer is C .
• Question 707: A magnetic field is said to exist at a point if a force is Options:
  A) exerted on a stationary charge at the point
  B) exerted on a moving charge at the point
  C) deflected at the point
  D) strengthened at the point
  Show Answer
  The correct answer is B .
• Question 708: The external and internal diameter of a tube are measured as (32 ± 2)mm and (21 ± 1)mm respectively. Determine the percentage error in the thickness of the tube. Options:
  A) 27%
  B) 14%
  C) 9%
  D) 3%
  Show Answer
  The correct answer is C .
• Question 709:

  On a fairly cool rainy day when the temperature is 20^oC, the length of a steel railroad track is 20m. What will be its length on a hot a dry day when the temperature is 40^oC?

  [coefficient of linear expansion of steel = 11 x 10^-6K^-1]

  Options:
  A) 20.013m
  B) 20.009m
  C) 20.004m
  D) 20.002m
  Show Answer
  The correct answer is C .
• Question 710: An engineer intends to deviate a light ray from its path by 120^o through reflection from a plane mirror. Calculate the angle of incidence Options:
  A) 60^o
  B) 40^o
  C) 30^o
  D) 20^o
  Show Answer
  The correct answer is C .