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 1: When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50cm and that of the eyepiece is 2.5om. What is the distance between the lenses? Options:
  A) 20.0cm
  B) 47.5cm
  C) 50.0cm
  D) 52.5cm
  E) 125.0cm.
  Show Answer
  The correct answer is D .
• Question 2: A body rolls down a slope from a height of 100m. its velocity at the foot of the slope is 20ms^-1. What percentage of its initial potential energy is converted into kinetic energy? [g = 10ms^-1] Options:
  A) 40%
  B) 35%
  C) 20%
  D) 15%
  Show Answer
  The correct answer is C .
• Question 3: 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 4: 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 5:

  When a brick is taken from the earth's surface to the moon, its mass

  Options:
  A) Remains constant
  B) Becomes zero
  C) Reduces
  D) increases
  Show Answer
  The correct answer is A .
• Question 6:

  Which of the following statements about radioactivity is true?

  (i) Alpha particle is positively charged

  (ii)Beta particle is negativelycharged

  (iii) Gamma ray is neutral

  (iv) Beta particle has thesame massas helium atom

  (v) Gamma ray is charged.

  Options:
  A) i, ii, iii, iv only
  B) i, ii, iii only
  C) iv and v only
  D) i, ii and v only
  Show Answer
  The correct answer is B .
• Question 7:

  Which of the following readings cannot be determined with a meter rule?

  Options:
  A) 2.56cm
  B) 2.25cm
  C) 2.50cm
  D) 2.05cm
  Show Answer
  The correct answer is A .
• Question 8:

  

  A short bar magnet is placed in earth's magnetic field, as shown above, which of the points II and III are/is possible positions of a neutral point?

  Options:
  A) I only
  B) II only
  C) III only
  D) I and II
  E) I,II and III
  Show Answer
  The correct answer is C .
• Question 9: A wave disturbance travelling in air enters a medium in which its velocity is less than that in air. Which of the following statements is true about the wave medium? Options:
  A) both the frequency of the wave and the wavelength are decreased
  B) the frequency of the wave is decreased while the wavelength is increased
  C) the frequency of the wave is unaltered while the wavelength is decreased
  D) the frequency of the wave is decreased while the wavelength is unaltered
  Show Answer
  The correct answer is C .
• Question 10: Which of the following expressions gives the linear magnification produced by a concave mirror of radius of curvature r, if U and V are the object and image distances respectively? Options:
  A) $\frac{V}{r}$ - 1
  B) $\frac{2V}{r}$ - 1
  C) $\frac{U}{r}$ - 1
  D) $\frac{2U}{r}$ - 1
  Show Answer
  The correct answer is D .