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 1461:

  

  Which of the following bodies, each with centre of gravity G, lying on a horizontal table, is/are in unstable equilibrium?

  Options:
  A) II only
  B) III only
  C) I and IV only
  D) II and III only
  Show Answer
  The correct answer is B .
• Question 1462: A boy looks at the image of an object in a plane mirror. He observes two images, a main bright one and the other faint. The observed images result from Options:
  A) reflection only
  B) refraction only
  C) diffraction and interference
  D) reflection and refraction
  E) reflection and diffraction
  Show Answer
  The correct answer is A .
• Question 1463: Convex mirror are used as driving mirrors because images formed are? Options:
  A) erect, virtual and diminished
  B) erect, real and diminished
  C) erect, virtual and magnified
  D) inverted virtual and diminished
  Show Answer
  The correct answer is A .
• Question 1464:

  

  In the figure above, XY is of length 1m, The value of R at balance point Z is

  Options:
  A) 3.0Ω
  B) 13.3Ω
  C) 15.0Ω
  D) 30.0Ω
  Show Answer
  The correct answer is D .
• Question 1465: Which of the following statements is incorrect? The sensitivity of a galvanometer which incorporates an optical lever arrangement may be increased by providing Options:
  A) a larger number of turns in the coil
  B) a thinner suspension with a small torsional control
  C) a special alloy permanent magnet which gives a high magnetic flux
  D) all of the above
  E) a light source with a greater intensity
  Show Answer
  The correct answer is D .
• Question 1466: An object 0 lies at a distance m in front of concave mirror of focal length f. If m < f, then the final image obtained will be Options:
  A) virtual and diminished
  B) magnified and erect
  C) real and inverted
  D) diminished and erect
  Show Answer
  The correct answer is C .
• Question 1467: The saturated vapour pressure of a liquid increases as the Options:
  A) volume of the liquid increases
  B) volume of the liquid decreases
  C) temperature of the liquid increases
  D) temperature of the liquid decreases
  Show Answer
  The correct answer is C .
• Question 1468:

  

  In the series a.c circuit shown above, the p.d across the inductor is 8V_r.m.s and that across the resistor is 6V_r.m.s. The effective voltage is

  Options:
  A) 2V
  B) 10V
  C) 14V
  D) 48V
  Show Answer
  The correct answer is B .
• Question 1469:

  

  In the above, a voltage V is applied across the terminals P and Q. The voltage across the 1 ohm resistor is

  Options:
  A) V/8
  B) V/4
  C) V/3
  D) V/2
  Show Answer
  The correct answer is C .
• Question 1470: What type of reaction is represented by the equation ${}_1^{2}X{+}_1^{2}X{\to }_2^{3}Y{+}_0^{1}n+Energy$ Options:
  A) Ionization
  B) Fusion
  C) Fission
  D) Chain
  Show Answer
  The correct answer is B .