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 1741: A concave mirror has a radius of curvature of 36cm. At what distance from the mirror should an object be placed to give a real image three times the size of the object? Options:
  A) 12cm
  B) 24cm
  C) 48cm
  D) 108cm
  Show Answer
  The correct answer is B .
• Question 1742: The vibration of an air column produces the sound in the Options:
  A) piano
  B) guiter
  C) flute
  D) school handbell
  Show Answer
  The correct answer is C .
• Question 1743: A body is projected from the earth's surface with the intention of letting it escape from the earth's gravitational field. What is the minimum escape velocity of the body? [Earth's radius = 6.4 x 10³km, g = 10ms^-2] Options:
  A) 14 kms^-1
  B) 13 kms^-1
  C) 12 kms^-1
  D) 11 kms^-1
  Show Answer
  The correct answer is D .
• Question 1744:

  The mechanical advantage (MA) of an inclined plane depends on

  Options:
  A) its length
  B) its height
  C) the product of its length and height
  D) the ratio of its length to its height
  Show Answer
  The correct answer is D .
• Question 1745:

  I. Mass

  II. Density

  III. Temperature

  IV. Nature of substance

  Which of the above affect diffusion?

  Options:
  A) I and II only
  B) I,II and IV only
  C) II, III and IV only
  D) I, II, III and IV
  Show Answer
  The correct answer is B .
• Question 1746: A member of the crew of a SPACESHIP experiences weightlessness in a space when they Options:
  A) Fall freely from the earth’s gravitational field
  B) Is walking on the planet
  C) In between the sun and the earth
  D) Holding anything in space is negative
  Show Answer
  The correct answer is A .
• Question 1747:

  What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 100N
  B) 90N
  C) 80N
  D) 120N
  Show Answer
  The correct answer is A .
• Question 1748:

  

  The diagram above shows a maximum and minimum thermometer divided into three portions P, Q and R. Which of the following is true about the respective content of P,Q and R

  Options:
  A) Alcohol, mercury and alcohol
  B) Air, alcohol and mercury
  C) Mercury, alcohol and mercury
  D) Air, mercury and alcohol
  Show Answer
  The correct answer is A .
• Question 1749:

  When the temperature of a liquid increases,its surface tension

  Options:
  A) decreases
  B) increases
  C) remains constant
  D) increases then decreases
  Show Answer
  The correct answer is A .
• Question 1750:

  Consider the wave equation y = 5mm sin [1cm${}^{-1}$x - 60s${}^{-1}$t]. The wave number is?

  Options:
  A) 0.1 cm${}^{-1}$
  B) 10cm${}^{-1}$
  C) 1.0cm${}^{-1}$
  D) 2cm${}^{-1}$
  Show Answer
  The correct answer is C .