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 2351: Which of the following is TRUE of a particle moving in a horizontal circle with constant angular velocity? Options:
  A) The energy is costant but the linear momentum varies
  B) The linear momentum is conatant but the energy varies
  C) both energy and linear momentum are constant
  D) The speed and the linear velocity are both constant
  Show Answer
  The correct answer is C .
• Question 2352: The direction of the magnetic field at a point in the vicinity of a bar magnet is Options:
  A) always towards the north pole of the magnet
  B) always away from the south pole of the magnet
  C) along the line joining the point to the neutral point
  D) in the direction the north pole of a compass needle would point
  Show Answer
  The correct answer is D .
• Question 2353: Boyle’s law may be Witten as Options:
  A) P1V1= P2V2
  B) V1 = V2 ÷ T1T2
  C) P1T1 = P2T2
  D) P1V1 ÷ T1 = P1V1 ÷ T2
  Show Answer
  The correct answer is A .
• Question 2354:

  When blue and green colours of light are mixed, the resultant colour is

  Options:
  A) cyan
  B) magenta
  C) black
  D) yellow
  Show Answer
  The correct answer is A .
• Question 2355: If two parallel conductors carry currents flowing in the same direction, the conducts will Options:
  A) attract each other
  B) repel each other
  C) both move in the same direction
  D) have no effect on each other
  Show Answer
  The correct answer is A .
• Question 2356:

  An astronomical telescope is said to be in normal adjustment when the?

  Options:
  A) eye is accommodated
  B) focal length of an object lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 2357:

  A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has

  Options:
  A) no charge and a zero potential
  B) a positive charge and a zero potential
  C) a negative charge and a positive potential
  D) a negative charge and a negative potential
  Show Answer
  The correct answer is D .
• Question 2358:

  A source of sound produces waves in air of wavelength1.65m. If the speed of soundin air is 330ms${}^{-1}$, the period of vibration in air is?

  Options:
  A) 200
  B) 0.005
  C) 0.5
  D) 0.02
  Show Answer
  The correct answer is B .
• Question 2359: A plane inclined at an angle of 30^o to the horizontal has an efficiency of 60%. The force parallel to the plane required to push a load of 120N uniformly up the plane is Options:
  A) 60N
  B) 100N
  C) 120N
  D) 200N
  E) 240N
  Show Answer
  The correct answer is B .
• Question 2360:

  A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?

  Options:
  A) 4mm
  B) 2mm
  C) 0.25mm
  D) 0.12mm
  Show Answer
  The correct answer is B .