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 411: The instrument used to measure the pressure of a gas is Options:
  A) barometer
  B) thermometer
  C) hygrometer
  D) manometer
  Show Answer
  The correct answer is D .
• Question 412: 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 .
• Question 413: A plane inclined at angle $\theta$ has a velocity ratio of 10 : 1. The inclination of the plane to the horizontal is given by Options:
  A) tan$\theta$ = $\frac{1}{10}$
  B) cot$\theta$ = $\frac{1}{10}$
  C) cos$\theta$ = $\frac{1}{10}$
  D) sin$\theta$ = $\frac{1}{10}$
  Show Answer
  The correct answer is D .
• Question 414: The function of the system of granulated carbon mixed with manganese (IV) oxide in a Letanche cell is to Options:
  A) increase the e.m.f. of the cell to 2.0V
  B) prevent local action in the cell
  C) prevent polarisation in the cell
  D) make the cell black and hence a good radiator
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  The correct answer is C .
• Question 415: Neutron were discovered by Options:
  A) J.J. Thompson
  B) James Chadwick
  C) Michael faraday
  D) Dalton
  Show Answer
  The correct answer is B .
• Question 416: A parallel plate capacitor of area 10cm² in vacuum has a capacitance of 10^-2$\mu$F. What is the distance between the plates?(e = 9 x 10^-12fm) Options:
  A) 9 x 10^-13m
  B) 9 x 10^-7m
  C) 9 x 10^-3m
  D) 9 x 10⁷m
  Show Answer
  The correct answer is B .
• Question 417: When cold water is poured on a can containing hot water, the can collapses because the Options:
  A) steam condeses and occupies the partial vacuum in the can
  B) external air pressure counter balances the pressure within the can
  C) steam expands to occupy the vacuum remaining in the can
  D) external pressure becomes greater than the pressure within the can.
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  The correct answer is D .
• Question 418: Shadows and eclipses result from the Options:
  A) refraction of light
  B) rectilinear propagation of light
  C) defraction of light
  D) reflection of light
  Show Answer
  The correct answer is B .
• Question 419: A real image three times the size of an object is formed 24cm from a converging mirror. what is the focal length of the mirror. Options:
  A) 16cm
  B) 6cm
  C) 8cm
  D) 12cm
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  The correct answer is B .
• Question 420: Calculate the magnitude of the electric field intensity in vacuum at a distance of 25cm from a charge of 5 × 10^-3C. [Take 1/4πε₀] Options:
  A) 7.2 × 108NC^-1
  B) 1.8 × 108NC^-1
  C) 5.6 × 108NC^-1
  D) 3.6 × 108NC^-1
  E) 1.5 × 106NC^-1
  Show Answer
  The correct answer is A .