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 1011: A block of ice floats on water inside a container. If the block of ice gets completely melted, the level of water in the container will Options:
  A) increase
  B) remain the same
  C) decrease
  D) first decrease and then increase
  Show Answer
  The correct answer is B .
• Question 1012: The phenomenon of light bending round an obstacle is? Options:
  A) diffraction
  B) refraction
  C) reflection
  D) polarization
  Show Answer
  The correct answer is A .
• Question 1013:

  A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms${}^{-1}$ from the top of a tower 10m high. Neglecting air resistance, its total energyjust before hitting the ground is? (Take g = 10ms${}^{-2}$)

  Options:
  A) 5J
  B) 10J
  C) 15J
  D) 20J
  Show Answer
  The correct answer is C .
• Question 1014:

  Which component of fiber-optic connector has a provision of entry for the fibre along with the fixationto connector housing?

  Options:
  A) coupling device
  B) cable
  C) ferrule
  D) connector housing
  Show Answer
  The correct answer is A .
• Question 1015: A semiconductor diode is used in rectifying alternating current into direct current mainly because it Options:
  A) allows current to flow in either direction
  B) is non-linear
  C) offers a high input resistance
  D) allows current to flow only in one direction
  Show Answer
  The correct answer is D .
• Question 1016: The dimension of electromotive force are ` Options:
  A) ML²T^-3I^-1
  B) ML²T^-3I^-2
  C) M²LT^-2I^-1
  D) M²L²T^-1I^-1
  Show Answer
  The correct answer is A .
• Question 1017:

  What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 100N
  B) 90N
  C) 80N
  D) 120N
  Show Answer
  The correct answer is A .
• Question 1018:

  A certain radioactive source emits radiation that was found to be deflected by both magneticand electric fields. The radiation is?

  Options:
  A) beta rays
  B) gamma rays
  C) x-rays
  D) ultra-violet rays
  Show Answer
  The correct answer is A .
• Question 1019:

  A ray of light passes through the centre of curvature of a concave mirror and strikes the mirror. At what angle is the ray reflected?

  Options:
  A) 180${}^o$
  B) 90${}^o$
  C) 0${}^o$
  D) 60${}^o$
  Show Answer
  The correct answer is C .
• Question 1020:

  A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the cell is

  Options:
  A) 12.0%
  B) 25.0%
  C) 33.3%
  D) 75.0%
  Show Answer
  The correct answer is C .