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 301: The statement that the mechanical advantage of a machine is 3 means that the Options:
  A) efficiency is 33$\frac{1}{3}$%
  B) effort is three times as large as the load
  C) mechanical advantage is 3 times as large as the velocity ratio
  D) ratio of the effort to the load is 1: 3
  E) Velocity ratio is 3
  Show Answer
  The correct answer is D .
• Question 302:

  A body executing a simple harmonic motion has an angular velocity of 22 radians per second. If it has a maximum

  Options:
  A) 1100ms^-1
  B) 440 ms^-1
  C) 220 ms^-1
  D) 22 ms^-1
  E) 2.2ms^-1
  Show Answer
  The correct answer is E .
• Question 303: A spring of force constant 500 NM^-1 is compressed such that its length shortens by 5cm. The energy stored in the spring is? Options:
  A) 0.625 J
  B) 6.250 J
  C) 62.500 J
  D) 625.000 J
  Show Answer
  The correct answer is A .
• Question 304: What is the cost of running seven 40 W lamps and five 80 W la mps for 12 hours of the electrical energy cost N7.00kWk? Options:
  A) N80.00
  B) N45.36
  C) N65.00
  D) N57.12
  Show Answer
  The correct answer is D .
• Question 305: A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms^-2] Options:
  A) 1.8m
  B) 2.0m
  C) 2.5m
  D) 3.0m
  Show Answer
  The correct answer is D .
• Question 306: Heat is radiated by hot objects in the form Options:
  A) x-rays
  B) light energy
  C) infrared rays
  D) solar energy
  Show Answer
  The correct answer is C .
• Question 307: In a resonance tube experiment, the effective length of the air column for the first resonance is 20cm when set into vibration by a tuning fork of frequency 480Hz. Neglecting and effect, the velocity of sound in air is Options:
  A) 96ms^-1
  B) 255ms^-1
  C) 340ms^-1
  D) 384ms^-1
  Show Answer
  The correct answer is D .
• Question 308: Which of the following statements are TRUE about frictional force? i. it is always a disadvantage ii. it is sometimes a disadvantage iii. it always exist where there is a relative motion of two bodies that are in contact iv. it is sometimes very useful Options:
  A) i, iii only
  B) i, iv only
  C) ii, iii only
  D) ii, iv only
  Show Answer
  The correct answer is D .
• Question 309: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 310: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .