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 2411: Which of the following ammeters may be used to measure alternating currents? i. moving-coil ammeter ii. moving-iron ammeter iii. hot-wire ammeter Options:
  A) i and ii only
  B) ii and iii only
  C) i and iii only
  D) i, ii, and iii
  Show Answer
  The correct answer is D .
• Question 2412:

  In a series R-L-C circuit at resonance, the voltages across the resistor and the inductors are 30V and 40V respectively. What is the voltage across the capacitor?

  Options:
  A) 30V
  B) 40V
  C) 50V
  D) 70V
  Show Answer
  The correct answer is B .
• Question 2413: If the refractive index of glass is 1.5, what is the critical angle at the air-glass interface? Options:
  A) sin^-1$\frac{1}{2}$
  B) sin^-1$\frac{2}{3}$
  C) sin^-1$\frac{3}{4}$
  D) sin^-1$\frac{8}{9}$
  Show Answer
  The correct answer is B .
• Question 2414: A vector quantity can only be completely described when ……… and …………are mentioned. Options:
  A) Magnitude and motion
  B) Magnitude and direction
  C) Distance and specified displacement
  D) Moment and momentum
  Show Answer
  The correct answer is B .
• Question 2415:

  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 2416: Which of the following statements is NOT true of the image in a plane mirror? The image is Options:
  A) the same size as the object
  B) laterally inverted
  C) virtual
  D) magnified
  E) the same distance behind the mirror as the object is in front
  Show Answer
  The correct answer is D .
• Question 2417: Which of the following statements are NOT correct? Options:
  A) boiling occurs when the saturated vapour pressure of the liquid involved equals the external pressure
  B) both the boiling point and the saturated vapour pressure of a given liquid depends on the external pressure
  C) the saturated vapour presssure rises with increase in temperature
  D) the saturated vapour pressure is independent of the volume available for the vapour
  E) it is possible to boil water at a lower temperature than 100^oC at high altitude
  Show Answer
  The correct answer is E .
• Question 2418: Which of the following statements are true about the spring balance and the chemical balance? i. both are used to measure the mass of an object. ii. either of them may be used to measure the weight of an object. iii. the spring balance works on the principle of Hooke's law while the chemical balance works on the principle of moments. iv. a change in gravity does the readings of a spring balance but not that of a chemical balance. Options:
  A) i, and iv
  B) ii and iii
  C) ii and iv
  D) i, ii and iii
  E) i and iii
  Show Answer
  The correct answer is C .
• Question 2419: When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity pf P to Q is Options:
  A) 1:4
  B) 4:1
  C) 1:1
  D) 2:1
  Show Answer
  The correct answer is C .
• Question 2420:

  

  In the diagram above a beam of white light travels from a rare to a dense medium. What colours of light do the rays a, b and c respectively represents?

  Options:
  A) red, green and blue
  B) Green, red and blue
  C) Yellow , blue and red
  D) Blue , yellow and red
  Show Answer
  The correct answer is A .