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 311:

  

  In the figure above, XY is of length 1m, The value of R at balance point Z is

  Options:
  A) 3.0Ω
  B) 13.3Ω
  C) 15.0Ω
  D) 30.0Ω
  Show Answer
  The correct answer is D .
• Question 312:

  I. Its velocity is constant

  II. No work is done on the body

  III. It has constant acceleration directed away from the centre

  IV. The centripetal force is directed towards the centreWhich combination of the above is true of a body moving with constant speed in a circular track?

  Options:
  A) II and IV
  B) I and IV
  C) II and III
  D) I and III
  Show Answer
  The correct answer is A .
• Question 313: A platinum resistance thermometer records 3.0$\mathrm{\Omega }$ at 0^oC and 8.0$\mathrm{\Omega }$ at 100^oC. If it records 6.0$\mathrm{\Omega }$ in a certain environment, The temperature of the medium is Options:
  A) 80^oC
  B) 60^oC
  C) 50^oC
  D) 30^oC
  Show Answer
  The correct answer is B .
• Question 314: 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 315: Boiling occurs when the vapour pressure of a liquid is Options:
  A) At the evaporation point
  B) Less than the atmospheric pressure
  C) Greater than the atmospheric pressure
  D) Equal to the atmospheric pressure
  Show Answer
  The correct answer is D .
• Question 316: All of the following frequencies are overtones of 320 Hz EXCEPT Options:
  A) 960Hz
  B) 640Hz
  C) 520Hz
  D) 1280Hz
  E) 1600Hz
  Show Answer
  The correct answer is C .
• Question 317: Electrical appliances at home are normally earthed so that Options:
  A) the appliances are maintained at a lower p.d than the earth
  B) both the a.c and d.c sources can be used
  C) a person touching the appliances is safe from electric shock
  D) the appliances are maintained at a higher p.d than the earth
  Show Answer
  The correct answer is C .
• Question 318: Which of the following is a scalar quantity? Options:
  A) Tension
  B) Weight
  C) Impulse
  D) Mass
  Show Answer
  The correct answer is D .
• Question 319:

  A capacitor and a resistor are connected in series with each other and in series with an accumulator of negligible internal resistance. The potential across the terminals of the capacitor is

  Options:
  A) twice the e.m.f of the accumulator
  B) less than the e.m.f by the potential drop across the resistor
  C) zero
  D) the same as the e.m.f.
  E) greater than
  Show Answer
  The correct answer is B .
• Question 320: Which of the following are found in the receiver but not in the microphone of a telephone handset? i. Diaphragm. ii. soft iron pole pieces. iii. permanent magnet. iv.carbon blocks Options:
  A) i and ii
  B) i and iv
  C) ii and iii
  D) iii and iv
  Show Answer
  The correct answer is B .