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 361: The thermal expansion of a solid is an advantage in Options:
  A) Balance wheel of a watch
  B) Construction of steel rail lines
  C) Construction of large steel bridges
  D) Fitting of tyres on wheels
  Show Answer
  The correct answer is A .
• Question 362: The d.c generator has essentially the same components as the a.c generator except the presence of? Options:
  A) slip-ring
  B) carbon brushes
  C) split ring
  D) armature
  Show Answer
  The correct answer is C .
• Question 363: A good calorimeter should be of Options:
  A) low specific heat capacity and low heat conductivity
  B) low specific heat capacity and high heat conductivity
  C) high specific heat capacity and low heat conductivity
  D) high specific heat capacity and low heat conductivity
  E) dull surface and low heat conductivity
  Show Answer
  The correct answer is B .
• Question 364:

  An electron in a hydrogen atom makes a transition from the ground level to the third level. If the energy at the ground level,calculate the energy at the third level.

  [h = 6.6 x 10^-34Js; f = 10¹⁵Hz]

  Options:
  A) 1.41eV
  B) 1.71eV
  C) 1.61eV
  D) 1.51eV
  Show Answer
  The correct answer is D .
• Question 365:

  If the attraction of the sun is suddenly ceased, the earth would continue to move in a straight line making a tangent with the original orbit. This statement is derived from Neutron's

  Options:
  A) First law of motion
  B) Second law of motion
  C) Third law of motion
  D) Law of universal gravitation
  Show Answer
  The correct answer is A .
• Question 366: In which of the following material media will sound travel fastest? Options:
  A) oil
  B) metal
  C) gas
  D) water
  Show Answer
  The correct answer is B .
• Question 367: Which of the following assumptions is made in a simple pendulum experiment? the Options:
  A) suspending string is inextensible
  B) bob has a finite size
  C) bob has a definite mass
  D) initial angle of oscillation must be large
  Show Answer
  The correct answer is A .
• Question 368:

  

  The figure above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y

  Options:
  A) 12Hz
  B) 19Hz
  C) 60Hz
  D) 75Hz
  Show Answer
  The correct answer is D .
• Question 369: A galvanometer of internal resistance 50$\mathrm{\Omega }$ has a full scale deflection for a current of 5mA. What is the resistance required to covert it to a voltmeter with full scale deflection of 10V? Options:
  A) 1750$\mathrm{\Omega }$
  B) 1950$\mathrm{\Omega }$
  C) 2000$\mathrm{\Omega }$
  D) 2500$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 370: When an ebolite rod is rubbed with fur, it has Options:
  A) no charge at all
  B) a negative charge
  C) a positive charge
  D) negative and positive charges
  Show Answer
  The correct answer is B .