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 1241: What is the cost of running seven 40 W lamps and five 80 W la mps for 12 hours of the electrical energy cost N7.00kWk? Options:
  A) N80.00
  B) N45.36
  C) N65.00
  D) N57.12
  Show Answer
  The correct answer is D .
• Question 1242: The mode of heat transfer which does not require a material medium is Options:
  A) conduction
  B) radiation
  C) convection
  D) propagation
  Show Answer
  The correct answer is B .
• Question 1243:

  The linear expansivityof brass is 2 x 10${}^{-5}$ ${}^o{C}^{-1}$. If the volume of piece of brass is 10cm${}^3$ at 0${}^o$C. What will be its volume at 100${}^o$C?

  Options:
  A) 10.06cm${}^3$
  B) 10.04 cm${}^3$
  C) 10.02 cm${}^3$
  D) 10.20 cm${}^3$
  Show Answer
  The correct answer is A .
• Question 1244:

  Water is not a good thermometric liquid because it?

  Options:
  A) expands unevenly between 0 ºC and 4 ºC
  B) maintains fixed density
  C) has low freezing point
  D) wets glass
  Show Answer
  The correct answer is D .
• Question 1245: a tap supplies water at 26^oC while another supplies water at 82^oC. If a man wishes to bathe with water at 40^oC the ratio of hot mass of hot water to that of cold water required is Options:
  A) 1:3
  B) 3:1
  C) 3:7
  D) 7:3
  E) 15:8
  Show Answer
  The correct answer is A .
• Question 1246:

  Transformers are designed so that energy losses are reduced to a minimum. This is achieved through those process.I. Using a soft iron ore

  II. Laminating the iron core to reduce energy loses due to eddy current

  III. Designing an efficient iron core

  Options:
  A) I & II only
  B) II only
  C) I, II, & III only
  D) III only
  Show Answer
  The correct answer is C .
• Question 1247: The inner diameter of a test tube can be measured accurately using a Options:
  A) micrometer screw guage
  B) pair of dividers
  C) metre rule
  D) pair of vernier calipers
  Show Answer
  The correct answer is D .
• Question 1248:

  What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 100N
  B) 90N
  C) 80N
  D) 120N
  Show Answer
  The correct answer is A .
• Question 1249: Myopic defects in the human eye can be corrected through the use of a Options:
  A) Concave Mirror
  B) Concave lens
  C) Prism
  D) Convex lens
  Show Answer
  The correct answer is B .
• Question 1250: Two bodies have masses in the ratio 3:1. They experience forces which impart to them acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced. Options:
  A) 1 : 4
  B) 2 : 1
  C) 2 : 3
  D) 2 : 5
  Show Answer
  The correct answer is C .