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 1531: The force required to make an object of mass m, travelling with velocity v, turn in a circle of radius r is Options:
  A) $\frac{m{v}^2}{r}$
  B) $\frac{m{r}^2}{v}$
  C) $\frac{mr}{v}$
  D) $\frac{mv}{r^2}$
  E) $\frac{mv}{r}$
  Show Answer
  The correct answer is A .
• Question 1532:

  Which of the following characteristics of a wave is used in the measurement of the depth of the Sea?

  Options:
  A) diffraction
  B) interference
  C) refraction
  D) reflection
  Show Answer
  The correct answer is D .
• Question 1533: A man wears convex lens glasses of focal length 40cm in order to correct his eye defect. instead of the optimum 25cm, his least distance of distinct vision is Options:
  A) 14cm
  B) 28cm
  C) 75cm
  D) 150cm
  Show Answer
  The correct answer is D .
• Question 1534: A cell of internal resistance r supplies current to a 6.0Ω resistor and its efficiency is 75%. Find the value of r. Options:
  A) 4.5Ω
  B) 1.0Ω
  C) 8.0Ω
  D) 2.0Ω
  Show Answer
  The correct answer is D .
• Question 1535:

  A boy standing some distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound is 340ms${}^{-1}$, how far is he from the cliff?

  Options:
  A) 680m
  B) 170m
  C) 34m
  D) 85m
  Show Answer
  The correct answer is D .
• Question 1536: Which type of radiation does not NOT originate within the nucleus? Options:
  A) alpha
  B) beta
  C) gamma
  D) neutron
  E) x-rays
  Show Answer
  The correct answer is E .
• Question 1537: A rod of length 10cm is heated through 100^oC and its final length is 10.26cm. What is the co-efficient of linear expansion of the rod? Options:
  A) 0.026 per degree centigrade
  B) 0.00026 per degree centigrade
  C) 0.26 per degree centigrade
  D) 1.0026 per degree centigrade
  E) 0.0026 per degree centigrade
  Show Answer
  The correct answer is B .
• Question 1538: When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is Options:
  A) 2 A
  B) 3 A
  C) 4 A
  D) 5 A
  Show Answer
  The correct answer is C .
• Question 1539: When a red rose flower is observed in blue light, what colour does the observer see? Options:
  A) Red
  B) Blue
  C) Magenta
  D) yellow
  E) No correct option
  Show Answer
  The correct answer is E .
• Question 1540: When left in a freezer, a bottle full of water cracks on freezing into ice because of the Options:
  A) increase in the volume of water
  B) contraction of the bottle
  C) expansion of the bottle
  D) decrease in the volume of water
  Show Answer
  The correct answer is A .