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 2141:

  

  The figure above shows a uniform wood of weight 200N and length 50m. It is pivoted at one end and suspended by a cord at the other end at an angle of 30 degrees to the wood. Calculate the tension in the cord if the wood is horizontal.

  Options:
  A) 10N
  B) 20N
  C) 100N
  D) 200N
  Show Answer
  The correct answer is D .
• Question 2142: The action of blotting paper on ink is due to Options:
  A) diffusion
  B) osmosis
  C) capillarity
  D) surface tension
  Show Answer
  The correct answer is C .
• Question 2143: During electrolysis, 2.0 g of a metal is deposited using a current of 0.5 A in 3 hours. The mass of the same metal which can be deposited using a current of 1.5 A in 1 hour is? Options:
  A) 1.0 g
  B) 0.5 g
  C) 3.0 g
  D) 2.0 g
  Show Answer
  The correct answer is D .
• Question 2144: If the normal atmospheric pressure in a laboratory supports a column of mercury 0.76m high and the relative density of mercury is 13.8, then the height of water column which atmospheric pressure will support in the same laboratory at the same time is Options:
  A) 0m
  B) 10m
  C) 13m
  D) 14m
  E) 18m
  Show Answer
  The correct answer is B .
• Question 2145:

  

  A short bar magnet is placed in earth's magnetic field, as shown above, which of the points II and III are/is possible positions of a neutral point?

  Options:
  A) I only
  B) II only
  C) III only
  D) I and II
  E) I,II and III
  Show Answer
  The correct answer is C .
• Question 2146:

  

  In the network shown above, determine the potential difference across the 5µF capacitor

  Options:
  A) 3V
  B) 6V
  C) 12V
  D) 18V
  Show Answer
  The correct answer is D .
• Question 2147: The operation of an optical fibre is based on the principal of Options:
  A) dispersion of light
  B) interference of light
  C) refraction of light
  D) polarization of light
  Show Answer
  The correct answer is C .
• Question 2148:

  The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20º and 80ºC respectively is?

  Options:
  A) 3.0 x 10${}^2$km${}^{-1}$
  B) 3.0 x 10${}^3$km${}^{-1}$
  C) 5.0 x 10${}^3$km${}^{-1}$
  D) 3.0 x 10${}^4$km${}^{-1}$
  Show Answer
  The correct answer is B .
• Question 2149:

  Which of the following statements about defects of vision is/are CORRECT?

  I. Fora long sighted person, close objects appear blurred

  II. For a short sighted person, distant objects appear blurred

  III. Short sight is corrected by using a pair of converging lenses

  Options:
  A) I only
  B) II only
  C) I and II only
  D) II and III only
  Show Answer
  The correct answer is C .
• Question 2150: The electrochemical equivalent of silver is 0.0012gC^-1. If 36.0g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5.0mins, the current must be Options:
  A) 6000A
  B) 100A
  C) 10A
  D) 1A
  Show Answer
  The correct answer is B .