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 1551:

  The lower and upper fixed points marked on a Mercury-in-glass thermometer are 210mm apart. The end of the mercury column in the tube is 49mmabove the lower fixed point in a room. What is the temperature of the room in degrees Celsius?

  Options:
  A) 55.3${}^o$C
  B) 23.3${}^o$C
  C) 49.0${}^o$C
  D) 16.43${}^o$C
  Show Answer
  The correct answer is B .
• Question 1552: What is the velocity of sound at 100 ^oC if the velocity of sound at 0 ^oC is 340ms ^-1? Options:
  A) 497m^-1
  B) 440m^-1
  C) 397m^-1
  D) 240m^-1
  Show Answer
  The correct answer is B .
• Question 1553: An object is weighted at different locations on the earth. What will be the right observation? Options:
  A) Both the mass and weight are constant
  B) Both the mass and weight vary
  C) the mass is constant while the weight varies
  D) the weight is constant while the mass varies
  Show Answer
  The correct answer is C .
• Question 1554:

  

  The diagram above shows two wave forms P and Q at a particular instant in time. the two waves will interface

  Options:
  A) destructively to produce a wave of larger amplitude
  B) destructively to produce a wave of smaller amplitude
  C) constructively to produce a wave of larger amplitude
  D) constructively to produce a wave of smaller amplitude
  Show Answer
  The correct answer is C .
• Question 1555: Which of the following will convert a milliammeter to a voltmeter? Options:
  A) low series resistance
  B) low parallel resistance
  C) high series resistance
  D) high parallel resistance
  E) parallel resistance equal to milliammeter resistance
  Show Answer
  The correct answer is C .
• Question 1556:

  

  The diagram above show the positions of a cone. The position which can be described as neutral equilibrium is represented as

  Options:
  A) Z only
  B) X only
  C) Y and Z
  D) Y and X
  Show Answer
  The correct answer is A .
• Question 1557: 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 1558:

  

  Four resistors R1, R2, R3 and R4 are connected in series as shown above, V1, V2, V3 are voltmeters connected as indicated above. Which of the following relations is correct??

  Options:
  A) V1 = V3 =V2/2
  B) V1 = 2V2 = V3
  C) V1=1/2V3 =V3
  D) V2 - V1 = V3
  Show Answer
  The correct answer is A .
• Question 1559: Which of the following is true for the image formed by a convex mirror? i. the image is always virtual ii. the image is always erect iii. the image lies between pole and focus iv. the image is never magnified v. the focus length is negative Options:
  A) i only
  B) i and ii only
  C) ii and iii only
  D) i, ii, iii and iv only
  E) all five
  Show Answer
  The correct answer is E .
• Question 1560: The stylus of a phonograph record exerts a force of 7.7 x 10^-2N on a groove of radius 10^-5m. Compute the pressure exerted by the stylus on the groove Options:
  A) 2.45 x 10⁸ Nm^-2
  B) 3.45 x 10⁸ Nm^-2
  C) 4.90 x 10⁸ Nm^-2
  D) 2.42 x 10⁸ Nm^-2
  Show Answer
  The correct answer is A .