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 711: The physical quantity that has the same dimensions as impulse is Options:
  A) energy
  B) momentum
  C) surface tension
  D) pressure
  Show Answer
  The correct answer is B .
• Question 712: A convex mirror is used as a driving mirror because i. its image is erect. ii. it has a large field of view. iii. it has a long focal length. Identify the CORRECT statement(s) Options:
  A) i andiii only
  B) i and ii only
  C) ii and iii only
  D) i, ii, and iii only
  E) i only
  Show Answer
  The correct answer is B .
• Question 713:

  If the frequency of an emitted x-ray is 1.6 x 10¹⁶Hz, the accelerating potential is?

  [e = 1.6 x 10^-19C, h = 6.63 x 10^-34Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .
• Question 714:

  

  The diagram above shows the capacitors C₁, C₂ and C₃ 2μF, 6μF and 3μF respectively. The potential difference across C₁, C₂ and C₃ respectively are

  Options:
  A) 4V, 6V and 2V
  B) 2V, 6V and 4V
  C) 6V, 4V and 2V
  D) 6V, 2V and 4V
  Show Answer
  The correct answer is D .
• Question 715:

  I. The motion of the tyres of a moving car.

  II. The motion of a loaded test tube oscillated

  vertically.

  III. The beating of the heart.

  IV. A stone tied to a string and whirled round.

  V. The motion of the pistons in a gasoline engine.

  Which of the motions above is simple harmonic?

  Options:
  A) III, IV and V only
  B) II, III and V only
  C) II, III and IV only
  D) I,II and III only
  Show Answer
  The correct answer is B .
• Question 716: A man stands on a spring scale placed in a lift. The lift descends at constant velocity. As a result, the scale reads a weight Options:
  A) greater than the weight of the man
  B) the same as the weight of the man
  C) of zero
  D) less than the weight of the man
  E) greater than the weight of the man by 1kg
  Show Answer
  The correct answer is B .
• Question 717: When vibration occurs in air column, the distance between a node and an antinode is equal to Options:
  A) one-quarter of the wavelength
  B) one-hall of the wavelength
  C) the wave length
  D) twice the wavelength
  E) four-times the wavelength
  Show Answer
  The correct answer is A .
• Question 718:

  

  The efficiency of the pulley system shown above is 80%. find the effort E required to lift the load of 1200N

  Options:
  A) 275N
  B) 325N
  C) 375N
  D) 573N
  Show Answer
  The correct answer is C .
• Question 719:

  Dry

  Day 1 - 30°C | Day 2 - 29°C | Day 3 - 25°CWet

  Day 1 - 22°C | Day 2 - 22°C | Day 3 - 21°CThe reading above are for three consecutive days from a wet and dry bulb hygrometer. It can be concluded that the relative humidity for the three days

  Options:
  A) decreased steadily
  B) remained unchanged
  C) increased steadily
  D) was least on Day 1
  Show Answer
  The correct answer is C .
• Question 720: The wavelength of a wave traveling with a velocity of 420 ms^-1 is 42 m. what is its period? Options:
  A) 1.2 s
  B) 1.0 s
  C) 0.5 s
  D) 0.1 s
  Show Answer
  The correct answer is D .