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 2271: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 2272:

  What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 100N
  B) 90N
  C) 80N
  D) 120N
  Show Answer
  The correct answer is A .
• Question 2273: A capacitor of 20 x 10^-12F and an inductor are joined in series. The value of the inductance that will give the circuit a resonance frequency of 200kHz is Options:
  A) I/16 H
  B) I/8 H
  C) I/64 H
  D) I/32 H
  Show Answer
  The correct answer is D .
• Question 2274:

  I. High thermal capacity.

  II. High sensitivity.

  III.Easy readability.

  IV. Accuracy over a wide range of temperature

  From the statement above, the qualities of a good thermometer are

  Options:
  A) I and II
  B) I, II,III and IV
  C) I, III and IV
  D) II, III and IV
  Show Answer
  The correct answer is D .
• Question 2275: The distance between two successive crests of a wave is 15cm and the velocity 300ms^-1. Calculate the frequency. Options:
  A) 2.0x10²Hz
  B) 4.5x10³Hz
  C) 2.0x10³Hz
  D) 4.5x10²Hz
  Show Answer
  The correct answer is C .
• Question 2276: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 2277: For correcting long sight defects in the human eye we require a Options:
  A) converging lens
  B) diverging lens
  C) microscope
  D) periscope
  E) plain glass sheet
  Show Answer
  The correct answer is A .
• Question 2278: Which of the following pairs of musical instruments produce sound due to the vibration of air column? Options:
  A) Bell and piano
  B) Guitar and flute
  C) Trumpet and drum
  D) Trumpet and flute
  E) Violin and organ
  Show Answer
  The correct answer is D .
• Question 2279: When left in a freezer, a bottle full of water cracks on freezing into ice because of the Options:
  A) increase in the volume of water
  B) contraction of the bottle
  C) expansion of the bottle
  D) decrease in the volume of water
  Show Answer
  The correct answer is A .
• Question 2280:

  In an inelastic collisionI. Energy is conversed

  II. Energy is decreased

  III. Energy is increased

  IV. Linear momentum conversed

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