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 51:

  What is the cost of running five 50W lamps and four 100W lamps for 10 hours if electrical energy costs 2 Kobo per KWh?

  Options:
  A) N0.65
  B) N0.39
  C) N3.90
  D) N0.13
  Show Answer
  The correct answer is D .
• Question 52: What charge is stored in a 0.1F capacitor when a 10V supply is connected across it? Options:
  A) 1C
  B) 5C
  C) 4C
  D) 2C
  Show Answer
  The correct answer is A .
• Question 53:

  If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be

  Options:
  A) oscillation
  B) circular
  C) rotational
  D) rectilinear
  Show Answer
  The correct answer is B .
• Question 54:

  I. Jet propelled aircraft
  II. Rocket propulsion
  III. The recoil of a gun
  IV. A person walking

  Which of the above is based on Newton's third law of motion

  Options:
  A) I and II only
  B) I, II, III, and IV only
  C) I and III only
  D) I, II and III only
  Show Answer
  The correct answer is B .
• Question 55:

  The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?

  Options:
  A) concave mirror of focal length 5cm
  B) concave mirror of focal length 10cm
  C) convex mirror of focal length 5cm
  D) convex mirror of focal length 10cm
  Show Answer
  The correct answer is C .
• Question 56:

  A single force which produces the same effect as a set of forces acting together at a point is known as the

  Options:
  A) component
  B) equilibrant
  C) resultant
  D) resistant
  Show Answer
  The correct answer is C .
• Question 57:

  A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is?

  Options:
  A) 3m
  B) 5m
  C) 6m
  D) 10m
  Show Answer
  The correct answer is C .
• Question 58:
  

  In the diagram above, if the south poles of two magnets stroke a steel bar, the polarities at X and Y will respectively be

  Options:
  A) south and north
  B) north and south
  C) north and north
  D) south and south
  Show Answer
  The correct answer is C .
• Question 59: Which of the following statements on the use of X-rays is incorrect? X-rays are used Options:
  A) in hospitals to obtain photogaphs of tissues and bones in the body
  B) for the treatment of malignant growths like cancer cells
  C) in detecting fingerprints
  D) to reveal hidden flaws in metal castings and welded joints
  E) to detect alternations which have been made to works of art
  Show Answer
  The correct answer is E .
• Question 60: The maximum permissible current through a galvanometer G of internal resistance 10$\mathrm{\Omega }$ is 0.05A. A resistance R is used to convert G into a voltmeter with a maximum reading of 100V. Find the value of R and how it is connected to G Options:
  A) 20,000 ohms in parallel
  B) 19,990 ohms in series
  C) 1990 ohms in series
  D) 100 ohms in series
  Show Answer
  The correct answer is C .