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 11: A gun of mass 2.0kg fires a bullet of mass 16 x 10 ^-2kg due East. If the bullet leaves the nozzle of the gun with a velocity of 150ms^-1, what is the recoil velocity of the gun? Options:
  A) 150ms^-1 due West
  B) 1.2 x 10^-4ms^-1 due West
  C) 1.2ms^-1 due West
  D) 1.2ms^-1 due East
  E) 150ms^-1 due East
  Show Answer
  The correct answer is C .
• Question 12: Water does not drop through an open umbrella of silk materials unless the inside of the umbrella is touched. This is due to Options:
  A) capilarity
  B) osmotic pressure
  C) viscosity
  D) surface tension
  Show Answer
  The correct answer is D .
• Question 13: A Motor Tyre is inflated to pressure of 2.0 x 10⁵Nm^-2 when the temperature of air is 27^oC. What will be the pressure in it at 87^oC assuming that the volume of the Tyre does not change? Options:
  A) 2.6 x 10⁵Nm^-2
  B) 2.4 x 10⁵Nm^-2
  C) 2.2 x 10⁵Nm^-2
  D) 1.3 x 10⁵Nm^-2
  Show Answer
  The correct answer is B .
• Question 14: The bond between silicon and germanium is Options:
  A) dative
  B) covalent bond
  C) trivalent
  D) ionic
  Show Answer
  The correct answer is B .
• Question 15: When the volume of a given mass of gas is halved and its temperature doubled, the pressure Options:
  A) remains constant
  B) increases by a factor of 4
  C) increases by a factor of 3
  D) decreases by a factor of 4
  Show Answer
  The correct answer is B .
• Question 16: The principle of operation of an induction coil is based on Options:
  A) Ohm's law
  B) Amphere's law
  C) Faraday's law
  D) Columbs law
  Show Answer
  The correct answer is C .
• Question 17: Which of the following statements about wave motion is correct? Options:
  A) Electromagnetic waves are transverse
  B) Transverse waves do not require a medium for propagation
  C) Longitudinal waves vibrate perpendicular to the direction of travel
  D) All mechanical waves are longitudinal
  Show Answer
  The correct answer is A .
• Question 18: Calculate the angle of minimum deviation for a ray which is refracted through an equiangular prism of refractive index 1.4 Options:
  A) 60⁰
  B) 29⁰
  C) 99⁰
  D) 90⁰
  Show Answer
  The correct answer is B .
• Question 19:

  If a light wave has a wavelength of 500nm in air what is the frequency of the wave?

  [c = 3 x 10⁸ ms^-1]

  Options:
  A) 3.0 x 10¹⁴ Hz
  B) 6.0 x 10¹⁴ Hz
  C) 6.0 x 10¹² Hz
  D) 2.5 x 10¹⁴ Hz
  Show Answer
  The correct answer is B .
• Question 20: A plane inclined at an angle at 30^o to the horizontal has an efficiency of 50%. The force parallel to the plane required to push a load of 120 N uniformly up the plane is Options:
  A) 40√3N
  B) 60N
  C) 120N
  D) 200N
  E) 240N
  Show Answer
  The correct answer is C .