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 1031: If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the Options:
  A) weight of P displaced is greater than that of Q
  B) weight of P displaced is less than that of Q
  C) volume of P displaced is greater than that of Q
  D) volume of P displaced is less than that of Q
  Show Answer
  The correct answer is A .
• Question 1032: Which of the following is a secondary colour Options:
  A) blue
  B) orange
  C) red
  D) green
  Show Answer
  The correct answer is B .
• Question 1033: A sonometer wire of length 100cm under a tension of 10N, has a frequency of 250Hz. Keeping the length of the wire constant, the tension is adjusted to produce a new frequency of 350Hz. The new tension is Options:
  A) 5.1N
  B) 7.1N
  C) 14.0N
  D) 19.6N
  Show Answer
  The correct answer is D .
• Question 1034: A generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. the energy consumed daily is? Options:
  A) 0.96 kWh
  B) 19.2 kWh
  C) 9.60 kWh
  D) 19.20 kWh
  Show Answer
  The correct answer is B .
• Question 1035: Power supply is transmitted at a very high voltage and low current in order to Options:
  A) make pass through the trasformers
  B) increase the power supply
  C) make it travel fast
  D) prevent overheating of the coil
  Show Answer
  The correct answer is D .
• Question 1036:

  

  The electric field between two - point charges is shown in the diagram above. What types of charges are at X and Y?

  Options:
  A) Both X and Y are negative
  B) Both X and Y are positive
  C) X is positive and Y is negative
  D) X is negative and Y is positive
  Show Answer
  The correct answer is B .
• Question 1037: The equation P^xV^yT^z = constant in charles' law when Options:
  A) x = 1, y = -1, z = 1
  B) x = 0, y = 1, z = -1
  C) x = 1, y = 0, z = -1
  D) x = 0, y = 1, z = 1
  Show Answer
  The correct answer is B .
• Question 1038:

  Calculate the heat energy required to vaporize 50g of water initially at 80ºCif the specific heat capacity of water is 4.23jg${}^{-1}$k${}^{-1}$ (specific latent heat of vaporization of water is 2260jg${}^{-1}$

  Options:
  A) 530000J
  B) 23200J
  C) 17200J
  D) 130000J
  Show Answer
  The correct answer is D .
• Question 1039: Which of the following statements on the use of X-rays is incorrect? X-rays are used Options:
  A) in hospitals to obtain photogaphs of tissues and bones in the body
  B) for the treatment of malignant growths like cancer cells
  C) in detecting fingerprints
  D) to reveal hidden flaws in metal castings and welded joints
  E) to detect alternations which have been made to works of art
  Show Answer
  The correct answer is E .
• Question 1040: A manometer is an instrument used for measuring Options:
  A) Relative density of liquid
  B) Pressure in liquids and gases
  C) Humidity
  D) Atmospheric pressure
  Show Answer
  The correct answer is B .