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 611: When the length I of a piece of wire under constant tension is varied, the relationship of the frequency of the vibration f$\alpha$/ is Options:
  A) f$\alpha$/
  B) f$\alpha \frac{1}{I^2}$
  C) f $\alpha \sqrt{I}$
  D) f$\alpha \frac{1}{1}$
  Show Answer
  The correct answer is D .
• Question 612: A travelling wave moving from left to right has an amplitude of 0.15m, a frequency of 550Hz and a wavelength of 0.01m. The equation describing the wave is Options:
  A) y = 0.15 sin 200π(x - 5.5t)
  B) y = 0.15 sin π(0.01x - 5.5t)
  C) y = 0.15 sin 5.5π(x - 200t)
  D) y = 0.15 sin π(550x - 0.01t)
  Show Answer
  The correct answer is A .
• Question 613: If two inductors of inductances 3H and 6H are arranged in series, the total inductance is Options:
  A) 9.0H
  B) 18.0H
  C) 0.5H
  D) 2.0H
  Show Answer
  The correct answer is A .
• Question 614: A quantity of gas occupies a certain volume when the temperature is -73^oC and the pressure is 1.5 atmospheres. If the pressure is increased to 4.5 atmospheres and the volume is halved at the same time, what will be the new temperature of the gas? Options:
  A) 573^oC
  B) 327^oC
  C) 300^oC
  D) 110^oC
  E) 27^oC
  Show Answer
  The correct answer is E .
• Question 615: If an object is placed in front of two mirrors inclined at 90^o, how many images will be formed? Options:
  A) five
  B) four
  C) three
  D) two
  Show Answer
  The correct answer is C .
• Question 616: A man walks 1km due east and then 1km due north. His displacement is Options:
  A) 1 km N15^oE
  B) 1 km N30^oE
  C) $\sqrt{2}$km N 45^oE
  D) $\sqrt{2}$km N 60^oE
  E) 2km N 75^oE
  Show Answer
  The correct answer is C .
• Question 617: Am elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is Options:
  A) 12cm
  B) 20cm
  C) 18cm
  D) 15cm
  Show Answer
  The correct answer is C .
• Question 618: A conductor of length 2m carries a current of 0.8A while kept in a magnetic field of magnetic flux density 0.5T. The maximum force acting on it is Options:
  A) 0.2N
  B) 0.8N
  C) 3.2N
  D) 8.0N
  Show Answer
  The correct answer is B .
• Question 619: How can energy loss be minimized through Eddy-current? Options:
  A) By using high resistance wire
  B) By using insulated soft iron wires
  C) By using low resistance wires
  D) Bu using turns of wires
  Show Answer
  The correct answer is A .
• Question 620:

  A source of sound produces waves in air of wavelength1.65m. If the speed of soundin air is 330ms${}^{-1}$, the period of vibration in air is?

  Options:
  A) 200
  B) 0.005
  C) 0.5
  D) 0.02
  Show Answer
  The correct answer is B .