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 2051: Two 50$\mu$F parallel plate capacitors are connected in series. The combined capacitor is then connected across a 100-V battery. The charge on each plate of the capacitor is Options:
  A) 5.00 x 10^-5C
  B) 2.50 x 10^-3C
  C) 1.25 x 10^-3C
  D) 1.00 x 10^-2C
  Show Answer
  The correct answer is B .
• Question 2052: An object is placed in front of a converging lens of a focal length 20cm. The image is virtual and has a magnification of 2. What is the distance of the object from the lens? Options:
  A) 5cm
  B) 10cm
  C) 30cm
  D) 40cm
  Show Answer
  The correct answer is B .
• Question 2053: The lack of power of accommodation which is mainly due to the hardening of the eye lens and is usual with onset of old age is called? Options:
  A) myopia
  B) hypermyopia
  C) presbyopia
  D) astigmatism
  E) eye ring
  Show Answer
  The correct answer is C .
• Question 2054: Which of the following correctly explain(s) why a green leaf appears green in bright day light? i. it absorbs only the green component of sunlight. ii. it absorbs all colour of sunlight except green. iii. it reflects only the green component of sunlight. Options:
  A) i only
  B) ii only
  C) i and iii only
  D) ii and iii only
  Show Answer
  The correct answer is D .
• Question 2055:

  A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?

  Options:
  A) 2400 J
  B) 9600 J
  C) 1500 J
  D) 1200 J
  Show Answer
  The correct answer is A .
• Question 2056: In photoelectric effect, electrons will leave the metal surface when illuminated by light of appropriate frequency if the photon energy is Options:
  A) greater than the work function
  B) less than the work function
  C) equal to the work function
  D) equal to the maximium kinetic energy of the electron
  Show Answer
  The correct answer is A .
• Question 2057: Which of the following is an essential physical property of the wires used for making fuses? Options:
  A) low density
  B) high thermal conductivity
  C) low electrical resistivity
  D) low melting point
  Show Answer
  The correct answer is D .
• Question 2058:

  Which of these is a derived unit?

  Options:
  A) Kilogram
  B) Metre
  C) Newton
  D) Second
  Show Answer
  The correct answer is C .
• Question 2059: Dewpoint is the temperature at which, water vapour in the atmosphere Options:
  A) turns into steam
  B) solidifies into ice pellets
  C) first condenses into liquid form
  D) is just sufficient to cause cooling
  E) has a relative humidity of fifty percent
  Show Answer
  The correct answer is D .
• Question 2060: A person can focus an object only when it lies within 200cm from him. Which spectacles should be used to increase his maximum distance of distinct vision infinity Options:
  A) Convex lens
  B) Binoculars
  C) Concave lens
  D) Plane glasses
  Show Answer
  The correct answer is C .