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 401: The fundamental frequency of a plucked wire under a tension of 400N is 250Hz. When the frequency is changed to 500 Hz at constant length, the tension is Options:
  A) 1600N
  B) 400N
  C) 160N
  D) 40N
  Show Answer
  The correct answer is A .
• Question 402:

  A simple pendulum, has a period of 5.77 seconds. When the pendulum is shortened by 3 m, the period is 4.60 seconds. Calculate the new length of the pendulum

  Options:
  A) 5.23 m
  B) 6.42 m
  C) 4.87 m
  D) 7.26 m
  Show Answer
  The correct answer is A .
• Question 403: A man clapping his hands at regular intervals observes that the echo of a clap coincides with the next clap. If the reflecting cliff is 160m away and the speed of sound is 320ms^-1, what is the frequency of the clapping? Options:
  A) 1 Hz
  B) 2Hz
  C) 4Hz
  D) 8Hz
  Show Answer
  The correct answer is A .
• Question 404:

  

  In the Fig above, MN is a light uniform meter rule pivoted at O, the 80cm mark. A load of mass 3.0 kg is suspended on the meter rule at L, the 10cm mark. If the rule is kept in equilibrium by a string RP, fixed at P and attached to the rule at R, the 20cm mark, then the Tension T on the string is

  Options:
  A) 30N
  B) 34N
  C) 35N
  D) 60N
  E) 70N
  Show Answer
  The correct answer is E .
• Question 405:
  

  A 200 kg load is raised using a 110 m long lever as shown in the diagram above. The load is 10m from the pivot P. If the efficiency of the the lever is 80%, find the effort E required to lift the load.

  [Take g = 10ms-2]

  Options:
  A) 250
  B) 300
  C) 450
  D) 200
  Show Answer
  The correct answer is A .
• Question 406: Which of the following statements about the compound microscope and astronomical telescope is (are) correct? i. the final image of a compound microscope is located at infinity ii. the final image of the astronomical telescope is always erect iii. the objective lens of a compound microscope has a very short focal length Options:
  A) i only
  B) ii only
  C) iii only
  D) i and iii
  E) ii and iii
  Show Answer
  The correct answer is C .
• Question 407: A ball is moving at 18ms^-1 in a direction inclined at 60^o to the horizontal. The horizontal component to its velocity is Options:
  A) 9√3ms^-1 ·
  B) 6√3ms^-1 ·
  C) 8√3ms^-1 ·
  D) 9ms^-1 ·
  Show Answer
  The correct answer is D .
• Question 408: The bond that forms a semiconductor is? Options:
  A) covalent
  B) electrovalent
  C) ionic
  D) metallic
  Show Answer
  The correct answer is A .
• Question 409:

  A transverse wave is applied to a string whose mass per unit length is 3 x 10^-2kgm^-1. If the string is under a tension 12N, the speed of the propagation of the wave is

  Options:
  A) 5 ms^-1
  B) 20 ms^-1
  C) 30 ms^-1
  D) 40 ms^-1
  Show Answer
  The correct answer is B .
• Question 410:

  The branch of physics that deals with the motion of objects and the forces acting on them is called:

  Options:
  A) Electromagnetism
  B) Thermodynamics
  C) Mechanics
  D) Quantum mechanics
  Show Answer
  The correct answer is C .