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 2691: 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 2692: Two closed vessels contain equal volumes of boiling water and are identical except that one is blackened on the outside while the other is polished. Which of the following is correct? Options:
  A) the polished vessel will cool faster because a polished surface is a good radiator
  B) the polished vessel will cool faster because it will absorbe less heat from the room
  C) the black vessel will cool faster because it is a better conductor of heat
  D) the polished vesselwill cool faster because it reflects heat better
  E) the black vessel will cool faster because a black surface radiates heat faster than a polished one
  Show Answer
  The correct answer is D .
• Question 2693:

  An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?

  Options:
  A) 26.25 cm behind the mirror
  B) 10.5 cm behind the mirror
  C) 26.25 cm in front of the mirror
  D) 10.5 cm in front of the mirror
  Show Answer
  The correct answer is A .
• Question 2694: a lead bullet of mass 0.05kg is fired with a velocity of 200ms^-1 into a lead block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is Options:
  A) 50 J
  B) 100 J
  C) 150 J
  D) 200 J
  Show Answer
  The correct answer is A .
• Question 2695: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 2696: In a D.C. circuit, a 10 microfarad (mf) capacitor is placed in series with a 10 0hm resistor. The total resistance of the combination is Options:
  A) 10 ohms
  B) 1 ohms
  C) zero
  D) 20 ohms
  E) infinite
  Show Answer
  The correct answer is E .
• Question 2697: When two parallel wires carry currents in opposite directions, the force on either wire is Options:
  A) away from the other wire
  B) zero, because the currents cancel each other
  C) twice as much as when the currents are in the same direction
  D) towards the other wire
  Show Answer
  The correct answer is A .
• Question 2698: Which of the following correctly explains why soft iron is proffered to steel in electromagnets? i. soft iron is more readily magnetized than steel. ii. soft iron is more readily demagnetized than steel. iii. soft iron retains magnetism more than steel. Options:
  A) i only
  B) ii and iii only
  C) i and ii only
  D) i, ii, and iii.
  Show Answer
  The correct answer is C .
• Question 2699: The principle of transmissibility of pressure in a fluid at rest in all directions is known as Options:
  A) Archimede's principle
  B) Flotation Principle
  C) Newton's lwa
  D) Pascal's law
  E) Boyle's law
  Show Answer
  The correct answer is D .
• Question 2700: What happens to a water pool on a day when the humidity of the air is very low? Options:
  A) Temperature decreases
  B) Slow evaporation
  C) Temperature increases
  D) Rapid evaporation
  Show Answer
  The correct answer is D .