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 341:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .
• Question 342: If a source of sound is moving, a stationary listener will hear a sound of different frequency. This is called Options:
  A) Doppler effect
  B) Resonance
  C) Ultra sound
  D) Diffraction of sound
  E) Rarefaction
  Show Answer
  The correct answer is A .
• Question 343: A glass bottle of initial volume 2 x 10⁴ cm³ is heated from 20^oC to 50^oC. If the linear expansivity of glass is 9 x 10⁶K^-1, the volume of the bottle at 50^oC is Options:
  A) 20016.2cm³
  B) 20005.4cm³
  C) 20008.1cm³
  D) 20013.5cm³
  Show Answer
  The correct answer is A .
• Question 344: The resultant force of a couple is ………? Options:
  A) Infinity
  B) Zero
  C) One
  D) Half
  Show Answer
  The correct answer is B .
• Question 345:

  A ship travelling towards a cliff receives the echo of its whistle after 3.5 seconds. A short while later, it receives the echo after 2.5 seconds. If the speed of sound in air under the prevalling condition is 250ms-1, how much closer is the ship to the cliff?

  Options:
  A) 10m
  B) 350m
  C) 175m
  D) 125m
  Show Answer
  The correct answer is D .
• Question 346:

  

  The diagram shown represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the efficiency of the machine is 40, then the value of W is?

  Options:
  A) 28.0
  B) 48.0N
  C) 233.0N
  D) 50.0N
  Show Answer
  The correct answer is D .
• Question 347: An arrow of mass 0.1kg moving with a horizontal velocity of 15ms^-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is Options:
  A) 15.0 ms^-1
  B) 7.5 ms^-1
  C) 3.8 ms^-1
  D) 3.0 ms^-1
  Show Answer
  The correct answer is D .
• Question 348: Mercury is suitable as a barometric fluid because it Options:
  A) expands uniformly
  B) is opaque
  C) is several times denser than water
  D) is a good conductor of heat
  Show Answer
  The correct answer is C .
• Question 349:

  

  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 350: From the kinetic theory of gases, temperature is a Options:
  A) form of energy and is proportional to the total kinetic energy of the molecules
  B) form of energy and is proportional to the average kinetic energy of the molecules
  C) physical property and is proportional to the total kinetic energy of the molecules
  D) physical property and is proportional to the average kinetic energy of the molecules
  Show Answer
  The correct answer is D .