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 921: A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill? Options:
  A) 528m
  B) 66m
  C) 136m
  D) 264m
  Show Answer
  The correct answer is C .
• Question 922: Which of the following properties makes metals ideal for cooking utensils? Options:
  A) high coefficient of expansion
  B) good conduction of heat
  C) low specific heat capacity
  D) poor radiation of heat
  Show Answer
  The correct answer is B .
• Question 923:

  A safety precaution designed to prolong the life of a lead acid accumulator is

  Options:
  A) By topping up the cells with concentrated acid
  B) The use of naked flame when charging the battery
  C) Keeping the specific gravity of the electrolyte within specified range
  D) By connecting wires to the terminals directly when testing the level of charging
  Show Answer
  The correct answer is C .
• Question 924:

  Neutrons were discovered by

  Options:
  A) Faraday
  B) Dalton
  C) James Chadwick
  D) Rutherford
  Show Answer
  The correct answer is C .
• Question 925: The displacement d produced in a glass block of thickness t and refractive index n when an object is viewed through it is Options:
  A) t – n
  B) t (1 + 1/n)
  C) t (1-1/n)
  D) t (1/n - 1)
  Show Answer
  The correct answer is C .
• Question 926: A real object is placed at a distance ucm in front of a curved mirror of focal length fcm. If the image is upright and magnified, then the mirror is Options:
  A) convex and u =2f
  B) concave and u = 2f
  C) convex and u = f
  D) concave and u = f
  Show Answer
  The correct answer is A .
• Question 927: A stream is flowing at 0.75ms^-1 and a boat heading perpendicular for the stream landed at the opposite bank at an angle of 30°. Calculate the velocity of the boat. Options:
  A) 1.50ms^-1
  B) 1.00ms^-1
  C) 0.86ms^-1
  D) 0.65ms^-1
  Show Answer
  The correct answer is C .
• Question 928: What is the inductance (L) of an inductor whose reactance is 1Ω at 50/ π hertz (H)? Options:
  A) 100 H
  B) 0.01H
  C) 10H
  D) 1H
  Show Answer
  The correct answer is B .
• Question 929: When temperature of a liquid increases, its surface tension Options:
  A) Decreases
  B) Increases
  C) Remain Constant
  D) Increases then decreases
  Show Answer
  The correct answer is A .
• Question 930:

  The mechanical advantage (MA) of an inclined plane depends on

  Options:
  A) its length
  B) its height
  C) the product of its length and height
  D) the ratio of its length to its height
  Show Answer
  The correct answer is D .