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 1221: Which of the following electromagnetic waves has the shortest wavelength? Options:
  A) Visible Light
  B) Ultraviolet rays
  C) Infrared rays
  D) Gamma rays
  Show Answer
  The correct answer is D .
• Question 1222: A ray of light strikes a plane mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what angle is the reflected ray rotated? Options:
  A) 70°
  B) 45°
  C) 25°
  D) 20°
  Show Answer
  The correct answer is D .
• Question 1223: A moving coil galvanometer of 300$\mathrm{\Omega }$ resistance gives full scale deflection for 1.0mA. The resistance R, of the shunt that is required to convert the galvanometer into a 3.0A ammeter is Options:
  A) 899.70$\mathrm{\Omega }$
  B) 10.00$\mathrm{\Omega }$
  C) 0.10$\mathrm{\Omega }$
  D) 0.01$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 1224: when a piece of rectangular glass block is inserted between two parallel capacitor,at constant plate area and distance of separation, the capacitance of the capacitor will Options:
  A) increase
  B) decrease
  C) decrease then increase
  D) remain constant
  Show Answer
  The correct answer is A .
• Question 1225:

  

  Which of the following figures gives the correct resultant R of two vectors P and Q?

  Options:
  A) I
  B) II
  C) III
  D) IV
  E) V
  Show Answer
  The correct answer is D .
• Question 1226: The major difference between a pure semiconductor and a pure metal is that Options:
  A) metals are harder than semiconductor
  B) while resistance of metals decrease with temperature , the reverse is the case for semiconductor
  C) the resistance of metals increases with temperature, while for semiconductors, it is the reverse
  D) metals have forbidden gaps while semiconductors have not
  Show Answer
  The correct answer is C .
• Question 1227: An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as Options:
  A) W + P
  B) P - W
  C) $\frac{w}{p}$
  D) $\frac{p}{w}$
  E) wp
  Show Answer
  The correct answer is C .
• Question 1228: The force with which an object is attracted to the earth is called its Options:
  A) acceleration
  B) mass
  C) gravity
  D) impulse
  E) weight
  Show Answer
  The correct answer is E .
• Question 1229: The resultant of two forces is 50N. If the forces are perpendicular to each other and one of them makes an angle 0f 30^o with the resultant, find its magnitude. Options:
  A) 100.0N
  B) 57.7N
  C) 43.3N
  D) 25.0N
  Show Answer
  The correct answer is C .
• Question 1230:

  

  In the diagram above, which of the angles ${\theta }_1$ , ${\theta }_2$ , ${\theta }_3$ and ${\theta }_4$ is the angle of deviation of the ray of light passing through the glass prism XYZ?

  Options:
  A) ${\theta }_3$
  B) ${\theta }_2$
  C) ${\theta }_1$
  D) ${\theta }_4$
  Show Answer
  The correct answer is C .