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 1391: A piece of wood floats inside water at room temperature with a fraction of it above the liquid surface. As the temperature of the water is raised, the part of the wood above the liquid will Options:
  A) decrease because the density of water decreases with temperature
  B) increase because the density of water decreases with temperature
  C) decreases because the density of water increases with water temperature
  D) increase because the density of water increases with temperature
  Show Answer
  The correct answer is A .
• Question 1392:

  A solid weighs 4.8g in air, 2.8g in water and 3.2g in Kerosine. The ratio of density of the solid to that of the kerosine is

  Options:
  A) 2
  B) $\frac{3}{2}$
  C) $\frac{2}{3}$
  D) 3
  Show Answer
  The correct answer is D .
• Question 1393: In a meter bridge experiment, two resistor 2$\mathrm{\Omega }$ and 3$\mathrm{\Omega }$ occupy the left and right gaps respectively. Find the balance point from the left side of the bridge Options:
  A) 20cm
  B) 40cm
  C) 60cm
  D) 80cm
  Show Answer
  The correct answer is B .
• Question 1394: Which of the following apparatus will require the smallest fuse rating for its protection? Options:
  A) 60W, 240V
  B) 60W, 40V
  C) 40W, 12V
  D) 40W, 5V
  Show Answer
  The correct answer is A .
• Question 1395: The plane mirrors in a kaleidoscope are usually placed Options:
  A) at an angle of 60^o
  B) parallel to one another
  C) perpendicular to one another
  D) at an angle of 45^o
  Show Answer
  The correct answer is A .
• Question 1396:

  I. Its velocity is constant

  II. No work is done on the body

  III. It has constant acceleration directed away from the centre

  IV. The centripetal force is directed towards the centreWhich combination of the above is true of a body moving with constant speed in a circular track?

  Options:
  A) II and IV
  B) I and IV
  C) II and III
  D) I and III
  Show Answer
  The correct answer is A .
• Question 1397: 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 1398: At what frequency would a 10H inductor have a reactance of 2000Ω? Options:
  A) π/200Hz
  B) π/100Hz
  C) 100/πHz
  D) 100πHz
  Show Answer
  The correct answer is C .
• Question 1399: Two bodies X and Y are projected on the same horizontal plane, with the same initial speed but at angles 30 and 60 respectively to the horizontal. Neglecting air resistance, the ratio of the range of X to that of Y is Options:
  A) 1:1
  B) 1:2
  C) √3:1
  D) √3
  Show Answer
  The correct answer is A .
• Question 1400:

  

  In the circuit above, three resistors, 2Ω, 4Ω and 12Ω are connected in parallel and a 12V battery is connected across the combination. The current flowing through the 12Ω resistors is

  Options:
  A) 14.4 A
  B) 1.0 A
  C) 3.2 A
  D) 9.6 A
  Show Answer
  The correct answer is B .