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 1271:

  

  What is the resultant resistance in the circuit given above

  Options:
  A) 11Ω
  B) 8Ω
  C) 4Ω
  D) 3.6Ω
  E) 4.3Ω
  Show Answer
  The correct answer is B .
• Question 1272: 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 1273: Radio waves have a velocity of 3 x 10⁸ms^-1. A radio station sends out a broadcast on a frequency of 800kHz. The wavelength of the broadcast is Options:
  A) 375.0m
  B) 267.0m
  C) 240.0m
  D) 37.5m
  E) 26.7m
  Show Answer
  The correct answer is A .
• Question 1274: An electron of charge 1.6 x 10^-19C and mass 9.1 x 10^-31kg is accelerated between two metal plates with a velocity of 4 x 10⁷ms^-1, the potential difference between the plates is Options:
  A) 4.55 x 10³V
  B) 4.55 x 10²V
  C) 9.10 x 10¹V
  D) 4.55 x 10¹V
  Show Answer
  The correct answer is A .
• Question 1275: The space surrounding a magnet in which the magnetic force is exerted is Options:
  A) magnetic field
  B) magnetic flux
  C) magnetic point
  D) magnetic pole
  E) magnetic strength
  Show Answer
  The correct answer is A .
• Question 1276: In a certain fusion reaction, a deuteron (${}_1^{2}H$) interacts with a triton (${}_1^{3}He$) and produces an a-particle (${}_2^{4}He$) and a second product. The second product is Options:
  A) a proton
  B) an electron
  C) a neutron
  D) a gamma ray
  Show Answer
  The correct answer is C .
• Question 1277: A progressive wave is represented by $y=10\text{Sin}(1000\pi t-\frac{\pi x}{34})$ . two layers of the wave separated by 153cm have a phase difference of Options:
  A) 270⁰
  B) 45⁰
  C) 90⁰
  D) 180⁰
  E) No Correct Option
  Show Answer
  The correct answer is E .
• Question 1278:

  

  Two mirrors of the same length are arranged as shown above, a ray of light NO strikes the system at O and emerges along PQ. The emergent ray has been deviated through

  Options:
  A) 220 degrees
  B) 200 degrees
  C) 210 degrees
  D) 180 degrees
  E) 230 degrees
  Show Answer
  The correct answer is D .
• Question 1279:

  Three resistors with resistance 200Ω, 500Ω and 1kΩ are connected in series. A 6v battery is connected to either end of the combination. Calculate the potential difference between the ends of 200Ω resistance.

  Options:
  A) 0.71V
  B) 0.7V
  C) 0.82V
  D) 0.8V
  Show Answer
  The correct answer is A .
• Question 1280:

  A generator manufacturing company accidentally made an AC generator instead of a DC generator. To fix this error,

  Options:
  A) the magnetic field needs to be made stronger
  B) the split rings should be replaced with slip rings
  C) the number of turns of the armature coil needs to be decreased
  D) the slip rings should be replaced with split rings
  Show Answer
  The correct answer is D .