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:

  

  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 2: In a fission process, the decrease in mass is 0.01%. How much energy could be obtained from the fission of 0.1g of the material Options:
  A) $9.0\times {10}^{9}J$
  B) $9.0\times {10}^{10}J$
  C) $6.3\times {10}^{11}J$
  D) $9.0\times {10}^{11}J$
  Show Answer
  The correct answer is A .
• Question 3:

  The relationship between the coefficient of linear expansion $\alpha$ and volumetric expansion ($\gamma$) is-----------------

  Options:
  A) $\gamma$ = ${\alpha }^{-3}$
  B) $\gamma$ = $\alpha$
  C) 3$\alpha$
  D) $\gamma$ = ${\alpha }^3$
  Show Answer
  The correct answer is C .
• Question 4:

  Which of the following statements regarding the application of electrical conduction via gases is/are correct?
  Electrical conduction in gas is applied in:
  (i) The identification of gases
  (ii) Lighting/fluorescent tubes
  (iii) Photocells
  (iv) Cathode ray oscilloscope/T.V. tubes

  Options:
  A) (i), (iii) and (iv) only
  B) (i), (ii) and (iv) only
  C) (ii), (iii) and (iv) only
  D) (i), (ii) and (iii) only
  Show Answer
  The correct answer is B .
• Question 5:

  At what frequency would a capacitor of 2.5μF

  Used in radio circuit have a resistance of 250Ω

  Options:
  A) π/800 Hz
  B) 800/π Hz
  C) 200π Hz
  D) 2000π Hz
  Show Answer
  The correct answer is B .
• Question 6: The external parts of an object can be measure accurately through the use of which scientific instrument? Options:
  A) Micrometer screw gauge
  B) Vernier Caliper
  C) Meter rule
  D) None of the instrument
  Show Answer
  The correct answer is A .
• Question 7:

  A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 rev/s. Calculate the centripetal force

  Options:
  A) 164N
  B) 160N
  C) 158N
  D) 172N
  Show Answer
  The correct answer is B .
• Question 8: Electricity is supplied to a school along a cable of total resistance 0.5$\mathrm{\Omega }$ with the maximum current drawn from the mains as 100A. The maximum energy dissipated as heat for 1 hr is Options:
  A) 3.6 x 10³J
  B) 5.0 x 10³J
  C) 3.0 x 10⁵J
  D) 1.8 x 10⁷J
  Show Answer
  The correct answer is D .
• Question 9: A vector quantity can only be completely described when ……… and …………are mentioned. Options:
  A) Magnitude and motion
  B) Magnitude and direction
  C) Distance and specified displacement
  D) Moment and momentum
  Show Answer
  The correct answer is B .
• Question 10: The terminal velocity of a ball-bearing falling through a viscous fluid reached when the Options:
  A) upthrust is equal to the weight of the ball
  B) ball accelerate uniformly
  C) upthrustis equal to the velocity of the ball
  D) velocity is uniform
  Show Answer
  The correct answer is D .