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 1511:

  The lower and upper fixed points marked on a Mercury-in-glass thermometer are 210mm apart. The end of the mercury column in the tube is 49mmabove the lower fixed point in a room. What is the temperature of the room in degrees Celsius?

  Options:
  A) 55.3${}^o$C
  B) 23.3${}^o$C
  C) 49.0${}^o$C
  D) 16.43${}^o$C
  Show Answer
  The correct answer is B .
• Question 1512:

  

  Fig 1 is a graph of force against extension for a spiral spring, the force constant of the spring is given by the

  Options:
  A) slope of the linear prtion of the graph
  B) length of the linear portion of the graph
  C) area under the linear portion of the graph
  D) area under the entire graph
  Show Answer
  The correct answer is A .
• Question 1513:

  

  The diagram above shows a balanced metre bridge, the value of x is

  Options:
  A) 75.0 cm
  B) 66.7 cm
  C) 33.3 cm
  D) 25.0 cm
  Show Answer
  The correct answer is C .
• Question 1514:

  A ray of light passes through the centre of curvature of a concave mirror and strikes the mirror. At what angle is the ray reflected?

  Options:
  A) 180${}^o$
  B) 90${}^o$
  C) 0${}^o$
  D) 60${}^o$
  Show Answer
  The correct answer is C .
• Question 1515:

  A mixture of blue and red pigment when illuminated by white light will appear

  Options:
  A) green
  B) orange
  C) purple
  D) magenta
  Show Answer
  The correct answer is C .
• Question 1516: 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 1517: A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowing in 1h is Options:
  A) 2g
  B) 6g
  C) 10g
  D) 18g
  Show Answer
  The correct answer is A .
• Question 1518: A coin is placed at the bottom of a cube of glass tern thick. If the refractive index of the glass is $\mu$, how high does the coin appear to be raised to an observer looking perpendicularly into the glass? Options:
  A) $\frac{1}{t-\mu }$
  B) $\frac{t(\mu -I)}{\mu }$
  C) t (1 + $\frac{1}{\mu }$)
  D) -$\mu$
  E) $\mu$t
  Show Answer
  The correct answer is B .
• Question 1519: A string of length 4m is extended by 0.02m when a load of 0.4kg is suspended at its end. What will be the length of the string when the applied force is 15N? Options:
  A) 4.05m
  B) 4.08m
  C) 5.05m
  D) 6.08m
  Show Answer
  The correct answer is B .
• Question 1520: Which of the following pairs is NOT part of the electromagnetic spectrum? i. Radio waves. ii. Beta rays. iii. Gamma rays. iv. Alpha rays Options:
  A) i and ii
  B) iii and iv
  C) i and ii
  D) ii and iv
  Show Answer
  The correct answer is D .