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 1171: Which of the following arrangements of the components of electromagnetic spectrum is in ascending order of wavelengths? Options:
  A) Gamma rays, ultraviolet rays, X- rays, infra - red rays
  B) Gamma rays, X-rays, ultraviolet rays, infra-red rays
  C) infra-red rays, ultraviolet rays, X-rays, gamma rays
  D) Gamma rays, ultraviolet rays, infra-red rays, X-rays
  Show Answer
  The correct answer is B .
• Question 1172: During a thunderstorm, the sound is heard over a long time. this phenomenon is referred to as Options:
  A) diffraction of sound
  B) refraction of sound
  C) superposition
  D) reveraberation
  Show Answer
  The correct answer is D .
• Question 1173: Three similar cells each of e.m.f 2 v and internal resistance 2Ω are connected in parallel, the total e.m.f and total internal resistance are respectively Options:
  A) 6 v, 6.0Ω
  B) 2 v, 0.7Ω
  C) 2 v, 6.0Ω
  D) 6 v, 0.7Ω
  Show Answer
  The correct answer is B .
• Question 1174: Three cells each of e.m.f. 1.5v and an internal resistance of 1.0$\mathrm{\Omega }$ are connected in parallel across a load resistance of 2.67$\mathrm{\Omega }$. Calculate the current in the load? Options:
  A) 0.26A
  B) 0.41A
  C) 0.50A
  D) 0.79A
  Show Answer
  The correct answer is C .
• Question 1175: The mechanism of heat transfer from one point to another through the vibration of the molecules of the medium is Options:
  A) covection
  B) conduction
  C) radiation
  D) diffusion
  Show Answer
  The correct answer is B .
• Question 1176: In a tuned radio receiver R, L, C series circuit for resonance, the inductive and capacitive reactance X_L and X_C respectively are related as Options:
  A) X_L = X_C
  B) X_L = ¹/₂X_C
  C) X_L = ¹/_XC
  D) X_L = 2X_C
  Show Answer
  The correct answer is A .
• Question 1177: Which of the following statements is NOT correct? Options:
  A) The average range of distinct vision for a normal eye is from the far distance (infinity) up to about 25cm in front of the eye
  B) Longsighted people have difficulty in making the eye lense sufficiently powerful to focus on nearby objects
  C) Shortsighted people cannot accommodate distant objects
  D) Longsighted people need diverging spectacle lenses
  E) A person with long sight has his eye-ball too short and the image of an object is therefore formed behind the retina
  Show Answer
  The correct answer is D .
• Question 1178: For semi conductor to have negative temperature coefficient of resistance implies that Options:
  A) their resistance decrease with temperature
  B) The resistance increase with temperature
  C) their resistance is constantly changing with temperature
  D) they have electrons and holes at high temperature
  Show Answer
  The correct answer is A .
• Question 1179: The spectrum of white light consists of coloured lights arranged in the following order Options:
  A) blue, red, green, yellow, indigo, violet, orange
  B) red, orange, yellow, green, blue, indigo, violet
  C) red, orange, yellow, indigo, green, blue, violet
  D) indigo, green, blue, violet, yellow, red, orange
  E) yellow, blue, green, violet, orange, indigo, red
  Show Answer
  The correct answer is B .
• Question 1180: An object moves with uniform speed round a circle. Its acceleration has Options:
  A) constant magnitude and constant direction
  B) constant magnitude and varying direction
  C) varying magnitude but constant direction
  D) varying magnitude and varying direction
  Show Answer
  The correct answer is B .