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 481: If a current carrying coil is mounted on a metal frame, the back e.m.f. induced in the coil causes Options:
  A) inductance
  B) eddy currents
  C) elecro-magnetism
  D) dipole moment
  Show Answer
  The correct answer is B .
• Question 482: The two liquids which are often used in thermometer on experiment basic is known as Options:
  A) Mercury only
  B) Alcohol and Water
  C) Mercury and Alcohol
  D) Alcohol only
  Show Answer
  The correct answer is C .
• Question 483: When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte? Options:
  A) 30.0g
  B) 24.0g
  C) 10.0g
  D) 6.0g
  E) 0.4g
  Show Answer
  The correct answer is B .
• Question 484: The mass of a specific gravity bottle is 15.2g when it is empty. it is 24.8g when filled with kerosene and 27.2g when filled with distilled water. Calculate the relative density of kerosene Options:
  A) 1.25
  B) 1.10
  C) 0.90
  D) 0.80
  Show Answer
  The correct answer is D .
• Question 485: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 486:

  A body starts from rest and moves with uniform acceleration of 6ms^-2. What distance does it cover in the third seconds

  Options:
  A) 15m
  B) 18m
  C) 27m
  D) 30m
  Show Answer
  The correct answer is A .
• Question 487:

  

  Given the inductor of inductance 5mH, 10mH and 20mH connected in series, the effective inductance is

  Options:
  A) 0.35mH
  B) 3.50mH
  C) 2.90mH
  D) 35.0mH
  Show Answer
  The correct answer is D .
• Question 488: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 489: What precaution should a manufacturer take to ensure that energy loss in a transformer is minimized? Options:
  A) the winding of the transformer should be made of high resistance wire
  B) the core should be made of thin sheets of metal
  C) no magnetic material should be used to make the core
  D) the flux linking the primary with the secondary coils should be minimum
  Show Answer
  The correct answer is B .
• Question 490: The force with which an object is attracted to the earth is called its Options:
  A) acceleration
  B) mass
  C) gravity
  D) impulse
  E) weight
  Show Answer
  The correct answer is E .