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 941:

  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 942: Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them. What is the total current in the circuit? Options:
  A) 14 A
  B) 12 A
  C) 10 A
  D) 8 A
  Show Answer
  The correct answer is B .
• Question 943:

  The energy of a photo having a wavelength of 10^-10m is

  (h= 6.63 x 10 ^-34Js, c =3.0 x 10 ⁸ms^-1)

  Options:
  A) 2.0 x 10 ^-15J
  B) 1.7 x 10 ^-13J
  C) 2.0 x 10 ^-12J
  D) 1.7 x 10 ^-12J
  Show Answer
  The correct answer is A .
• Question 944: A hydrometer is an instrument for measuring the Options:
  A) depth of water in a vessel
  B) relative density of a liquid by the method of flotation
  C) relative dendity of a liquid by finding the apparent loss in weight
  D) relative humidity of the air
  E) atmospheric pressure when the air is humid
  Show Answer
  The correct answer is B .
• Question 945: If the angle between two vector P and Q is O^o, the vectors are said to Options:
  A) intersect at the angle 45^o
  B) intersect at the angle 60^o
  C) be parallel
  D) be perpendicular
  Show Answer
  The correct answer is C .
• Question 946: An electric device is rated 2000W, 250V. Calculate the maximum current it can take Options:
  A) 9A
  B) 8A
  C) 7A
  D) 6A
  Show Answer
  The correct answer is B .
• Question 947: A copper cube weighs 0.25 N in air, 0.17N when completely immersed in paraffin oil and 0.15 N when completely immersed in water.The ratio of upthrust in oil to upthrust in water is Options:
  A) 3 : 5
  B) 4 : 5
  C) 7 : 10
  D) 13 : 10
  Show Answer
  The correct answer is B .
• Question 948: The range of accommodation of a normal human eye is Options:
  A) 0m to 0.1m
  B) 0m to 0.25m
  C) 0.10m to 0.25m
  D) 0.10m to infinity
  E) 0.25m to infinity
  Show Answer
  The correct answer is E .
• Question 949: A constant force of magnitude F acts on an object of mass 0.04kg initially at rest at a point O. if the speed of the object when it has moved 50m from O is 500ms^-1, what is the value of F? Options:
  A) 0.4N
  B) 100.0N
  C) 250.0N
  D) 1000.0N
  Show Answer
  The correct answer is B .
• Question 950: The property of the eye known as its power of accommodation is controlled by the Options:
  A) pupil
  B) virteous humour
  C) iris
  D) ciliary muscles
  Show Answer
  The correct answer is D .