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 1: An inclined plane of angle $\theta$, acting as a simple machine, has a velocity ratio Options:
  A) sin$\theta$
  B) $\frac{1}{\text{sin}\theta }$
  C) cos$\theta$
  D) $\frac{1}{\text{cos}\theta }$
  E) sin$\theta cos\theta$
  Show Answer
  The correct answer is B .
• Question 2: Lenz's law is a law of conservation of Options:
  A) electric charge
  B) electric current
  C) Energy
  D) Momentum
  Show Answer
  The correct answer is C .
• Question 3:

  

  The value of the series resistor required to convert the above galvanometer into a voltmeter with a full range deflection of 15V is

  Options:
  A) 985 ohms
  B) 990 ohms
  C) 995 ohms
  D) 1000 ohms
  E) 1005 ohms
  Show Answer
  The correct answer is C .
• Question 4: Which of the following statements is NOT correct? Options:
  A) A galvanometer can be converted to an ammeter with a different range by connecting a high resistance in series
  B) An electric current always produces a magnetic field
  C) Maxwell's screw rule states that if a corkscrew moves inthe direction of the current, the hand turns in the direction of the lines of force
  D) Electromagnets are used in electric bells and telephone recievers
  E) The lines of force round a straight current carrying conductor are circular
  Show Answer
  The correct answer is A .
• Question 5:

  The linear expansivityof brass is 2 x 10${}^{-5}$ ${}^o{C}^{-1}$. If the volume of piece of brass is 10cm${}^3$ at 0${}^o$C. What will be its volume at 100${}^o$C?

  Options:
  A) 10.06cm${}^3$
  B) 10.04 cm${}^3$
  C) 10.02 cm${}^3$
  D) 10.20 cm${}^3$
  Show Answer
  The correct answer is A .
• Question 6:

  

  The graph in the fig above describes the motion of a particle. the acceleration of the particle during the motion is

  Options:
  A) 0.00ms^-2
  B) 0.25ms^-2
  C) 4.00ms^-2
  D) 8.00ms^-2
  E) 10.00ms^-2
  Show Answer
  The correct answer is C .
• Question 7: The resistances of platinum wire at the ice and steam points are 0.75 ohm and 1.05 ohm respectively. Determine the temperature at which the resistance of the wire is 0.90 ohm Options:
  A) 43.0^oC
  B) 50.0^oC
  C) 69.9^oC
  D) 87.0^oC
  Show Answer
  The correct answer is B .
• Question 8: A radio station broadcast at a frequency of 600KHZ. If the speed of light in air is 3 × 108ms${}^{-1}$. Calculate the wavelength of the radio wave Options:
  A) 2.20 × 10${}^3$m
  B) 5.0 × 10${}^2$m
  C) 5.0 × 10${}^5$m
  D) 11.8 × 10${}^{11}$m
  Show Answer
  The correct answer is B .
• Question 9:

  Which of the following statements on the use of X-rays is incorrect? X-rays are used

  Options:
  A) In a hospital to obtain photographs of tissues and bones in the body
  B) For the treatment of malignant growths like cancer cells
  C) In detecting fingerprints
  D) To reveal hidden flaws in metal castings and welded joints work of art
  Show Answer
  The correct answer is C .
• Question 10:

  The lower and upper fixed points marked on a Mercury-in-glass thermometer are 210mm apart. The end of the mercury column in the tube is 49mmabove the lower fixed point in a room. What is the temperature of the room in degrees Celsius?

  Options:
  A) 55.3${}^o$C
  B) 23.3${}^o$C
  C) 49.0${}^o$C
  D) 16.43${}^o$C
  Show Answer
  The correct answer is B .