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 1051: A metal rod 800mm long is heated from 10^oC to 95^oC. If it expands by 1.36mm, the linear expansivity of the metal is Options:
  A) 2.0 x 10²K^-1
  B) 2.0 x 10²K^-1
  C) 5.0 x 10^-3K^-1
  D) 2.0 x 10^-5K^-1
  Show Answer
  The correct answer is D .
• Question 1052:

  

  The resultant capacitance in the figure above is

  Options:
  A) 15.0µF
  B) 9.8µF
  C) 1.3µF
  D) 0.8µF
  Show Answer
  The correct answer is D .
• Question 1053: The melting point of naphthalene is 78^oC. What is this temperature in kelvin Options:
  A) 100k
  B) 351k
  C) 378k
  D) 444k
  Show Answer
  The correct answer is B .
• Question 1054: In homes, electrical appliances and lamps are connected in parallel because Options:
  A) Parallel connections do not heat up the wires
  B) series connections use high voltage
  C) less current will be used
  D) less voltage will be used
  Show Answer
  The correct answer is C .
• Question 1055: In a compound microscope, the objective and the eye piece focal lengths are Options:
  A) At infinity
  B) Long
  C) Short
  D) The same
  Show Answer
  The correct answer is C .
• Question 1056: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 1057:

  

  The figure above shows displacement-time graphs for three different motions. which of the following statements is correct

  Options:
  A) graph 2 corresponds to the highest velocity
  B) graph 1 corresponds to zero gravity
  C) graph 3 corresponds to a particle moving in the negative x direction
  D) graph 2 corresponds to a particle moving in the positive x direction
  Show Answer
  The correct answer is D .
• Question 1058: The resistance of a series R-C circuit is 5 ω If the impedance of the circuit is 13 ω calculate the reactance of the capacitor Options:
  A) 12 Ω
  B) 14 Ω
  C) 16 Ω
  D) 18 Ω
  E) 65 Ω
  Show Answer
  The correct answer is A .
• Question 1059: In a purely inductive circuit, the current Options:
  A) lags behind the voltage in phase by 90^o
  B) leads the voltage in phase by 90^o
  C) is in the same phase with the voltage
  D) leads the voltage by 180^o
  Show Answer
  The correct answer is A .
• Question 1060: The physical quantity that has the same dimensions as impulse is Options:
  A) energy
  B) momentum
  C) surface tension
  D) pressure
  Show Answer
  The correct answer is B .