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 2081: Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high Options:
  A) 10 cm
  B) 16 cm
  C) 5 cm
  D) 14 cm
  Show Answer
  The correct answer is D .
• Question 2082:

  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) $\frac{m{r}^2}{x}$
  C) $\frac{mr}{v}$
  D) $\frac{mv}{r^2}$
  Show Answer
  The correct answer is A .
• Question 2083:

  In what range oftemperature is the expansion of water anomalous?

  Options:
  A) +208${}^o$C to +212${}^o$C
  B) -80${}^o$C + -76${}^o$C
  C) 0${}^o$C to +4${}^o$C
  D) -4${}^o$C to +0${}^o$C
  Show Answer
  The correct answer is C .
• Question 2084:

  

  In the diagram above, MN is perpendicular to ON and MR what is the difference between the moment about N of the force of 20 Newtons applied along MP an its moment about 0

  Options:
  A) Zero
  B) 0.2N.m
  C) 0.4N.m
  D) 0.8N.m
  E) 0.6N.m
  Show Answer
  The correct answer is A .
• Question 2085: The sound of an electricity bell dies down slowly when air is slowly pumped out from a bottle because Options:
  A) the wavelength of sound becomes greater in the bottle
  B) sound cannot pass through the bottle
  C) sound needs a material medium
  D) sound can pass through a vacuum
  Show Answer
  The correct answer is C .
• Question 2086: A cell of internal resistance 0.01Ω can be measured accurately using the Options:
  A) Ohm meter
  B) metre bridge
  C) potentiometer
  D) electroscope
  Show Answer
  The correct answer is C .
• Question 2087: One of the conditions necessary for an object to be in equilibrium when acted upon by a number of parallel forces is that the vector sum of the forces is Options:
  A) Average
  B) Zero
  C) Negative
  D) Positive
  Show Answer
  The correct answer is B .
• Question 2088:

  

  The fig above represents the main sequence of energy conversion at Kainji dam. What is the efficiency of the system?

  Options:
  A) Q1/Q2
  B) E/Q1
  C) E/(Q1-Q2)
  D) E/(Q1-Q2)
  Show Answer
  The correct answer is B .
• Question 2089: Which of the following arrangements of the components of electromagnetic spectrum is in ascending order of wavelengths? Options:
  A) Gamma rays, ultraviolet rays, X- rays, infra - red rays
  B) Gamma rays, X-rays, ultraviolet rays, infra-red rays
  C) infra-red rays, ultraviolet rays, X-rays, gamma rays
  D) Gamma rays, ultraviolet rays, infra-red rays, X-rays
  Show Answer
  The correct answer is B .
• Question 2090: Which of the following statements are true of an insulated charged body carrying positive charge? i. it contains excess positive charges. ii. it creates an electric field. iii. it possesses potential energy. iv. it carries electric current. Options:
  A) i and iv only
  B) i and ii only
  C) i, ii, iii only
  D) i, ii, iii and iv
  Show Answer
  The correct answer is D .