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 971: When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will Options:
  A) increase
  B) decrease
  C) remain the same
  D) increase then decrease
  Show Answer
  The correct answer is B .
• Question 972:

  An alternating current can induce voltage because it has

  Options:
  A) ripple value
  B) varying magnetic field
  C) weaker magnetic field than direct current
  D) high peak value
  Show Answer
  The correct answer is B .
• Question 973: If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600µc across the field is Options:
  A) 0.8j
  B) 1.8j
  C) 9.0j
  D) 18.0j
  Show Answer
  The correct answer is B .
• Question 974:

  The earth's gravitational field intensity at its surface is about

  (G = 6.7 × 10${}^{-11}$Nm${}^2$/kg${}^2$, mass of the earth is 6 × 10${}^{24}$kg, radius of the earth is 6.4 × 10${}^6$m, g on the earth = 9.8m/s${}^2$)

  Options:
  A) 6.7N/kg
  B) 7.9N/kg
  C) 8.0N/kg
  D) 9.8N/kg
  Show Answer
  The correct answer is D .
• Question 975: A manometer is an instrument used for measuring Options:
  A) Relative density of liquid
  B) Pressure in liquids and gases
  C) Humidity
  D) Atmospheric pressure
  Show Answer
  The correct answer is B .
• Question 976: Which of the following statements is applicable to a real image formed by a concave mirror? i. it can be observed on a screen ii. it is always inverted and in front of the mirror iii. it only seams to exist IV. it is formed by the actual converging of rays of light Options:
  A) i, ii and iii
  B) i, ii and iv only
  C) i and ii only
  D) i and ii only
  E) all four statements
  Show Answer
  The correct answer is B .
• Question 977:

  

  A uniform bean HK of length 10m and weighing 200N is supported at both ends as shown above. A man weighing 1000N stands at a point P on the beam. If the reactions at point H an K respectively are 800N and 400N, Then the distance HP is

  Options:
  A) 4m
  B) 3.5m
  C) 3m
  D) $6\frac{2}{3}$m
  E) 7m
  Show Answer
  The correct answer is C .
• Question 978: An equipment whose power is 1500W and resistance is 375 ohms would draw a current of Options:
  A) 0.10A
  B) 2.00A
  C) 4.00A
  D) 77.5A
  Show Answer
  The correct answer is B .
• Question 979: In a projection lantern of focal length f, the object distance u, is such that Options:
  A) u > 2f > f
  B) u < f < 2f
  C) u = f < 2f
  D) f < u < 2f
  Show Answer
  The correct answer is D .
• Question 980:

  A certain radioactive source emits radiation that was found to be deflected by both magneticand electric fields. The radiation is?

  Options:
  A) beta rays
  B) gamma rays
  C) x-rays
  D) ultra-violet rays
  Show Answer
  The correct answer is A .