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 1151: Two particles X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. the ratio of the time taken by X to that taken by Y is Options:
  A) $\frac{1}{2}$
  B) $\frac{1}{\sqrt{2}}$
  C) $\frac{1}{\sqrt{2}}$
  D) $\sqrt{2}$
  E) 4
  Show Answer
  The correct answer is C .
• Question 1152: A platinum-resistance thermometer has a resistance of 4Ω at 0°C and 12Ω at 100°C. Assuming that the resistance changes uniformly with temperature. Calculate the resistance of the thermometer when the temperature is 45°C. Options:
  A) 6.0Ω
  B) 6.42Ω
  C) 7.6Ω
  D) 8.4Ω
  E) 16.0Ω
  Show Answer
  The correct answer is C .
• Question 1153: By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens? Options:
  A) 15.0
  B) 2.5
  C) 1.5
  D) 0.4
  Show Answer
  The correct answer is B .
• Question 1154: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 1155: A wave disturbance travelling in air enters a medium in which its velocity is less than that in air. Which of the following statements is true about the wave medium? Options:
  A) both the frequency of the wave and the wavelength are decreased
  B) the frequency of the wave is decreased while the wavelength is increased
  C) the frequency of the wave is unaltered while the wavelength is decreased
  D) the frequency of the wave is decreased while the wavelength is unaltered
  Show Answer
  The correct answer is C .
• Question 1156: A machine gun with a mass of 5kg fires a 50g bullet at speed of 100ms^-1. The recoil speed of the machine gun is Options:
  A) 0.5 msec^-1
  B) 1.5 msec^-1
  C) 1 msec^-1
  D) 2 msec^-1
  E) 4 msec^-1
  Show Answer
  The correct answer is C .
• Question 1157: A quantity of sungas at -133 occupies 1/3m³ under pressure 1.4 x 10⁵ Nm^-2. if the gas occupies 31 m^-2 at 37^oC, its pressure will be Options:
  A) 1.26 x 10³Nm^-2
  B) 3.3 x10⁴Nm^-2
  C) 1.35 x 10⁴Nm^-2
  D) 2.2 x 10⁴Nm^-2
  E) 10⁵Nm^-2
  Show Answer
  The correct answer is B .
• Question 1158: What will happen to the pressure of a gas if its temperature is reduced to -273^oC? Options:
  A) It will decrease
  B) it will drop to zero
  C) It will increase
  D) It will remain constant
  Show Answer
  The correct answer is B .
• Question 1159: A certain radioactive source emits radiations that were found to be deflected by both magnetic and electric fields. The radiations are Options:
  A) beta rays
  B) gamma rays
  C) x-rays
  D) unltr-violet rays
  Show Answer
  The correct answer is A .
• Question 1160: Which of the following arrangements in the sequence shown can be used to obtain a pure spectrum of white light? Options:
  A) source, slit, converging lens, prism, converging lens, screen.
  B) source, slit, diverging lens, prism, diverging lens, screen.
  C) source, converging lens, prism, diverging lens, screen.
  D) source, slit, prism, diverging lens, converging lens, screen.
  E) source, slit, prism, diverging lens, sreen.
  Show Answer
  The correct answer is A .