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 1231: A manometer is an instrument used for measuring Options:
  A) Relative density of liquid
  B) Pressure in liquids and gases
  C) Humidity
  D) Atmospheric pressure
  Show Answer
  The correct answer is B .
• Question 1232: Electric motor primarily converts Options:
  A) electrical energy into chemical energy
  B) electrical energy into heat energy
  C) kinetic energy into potential energy
  D) electrical energy into mechanical energy
  E) mechanical energy into light energy
  Show Answer
  The correct answer is D .
• Question 1233: The atmospheric pressure due to water is 1.3 x 10⁶Nm^-2. What is the total pressure at the bottom of an ocean 10m deep? [Density of water = 1000kgm^-3, g = 10ms^-2] Options:
  A) 1.3 x 10⁷Nm^-2
  B) 1.4 x 10⁶Nm^-2
  C) 1.4 x 10⁵Nm^-2
  D) 1.0 x 10 ⁵Nm^-2
  Show Answer
  The correct answer is B .
• Question 1234: Given that young's modulus for aluminium is 7.0 x 10¹⁰Nm^-2 and density is 2.7 x 10³kgm^-3 find the speed of the sound produced if a solid bar is struck at one end with a hammer Options:
  A) 5.1 x 10³ms^-1
  B) 4.2 x 10³ms^-1
  C) 3.6 x 10³ms^-1
  D) 2.8 x 10³ms^-1
  Show Answer
  The correct answer is A .
• Question 1235: A sheet of white paper viewed through blue glass appears blue because Options:
  A) blue is a primary colour
  B) the glass absorbs all colours except the blue colour
  C) the glass reflects blue colour
  D) the paper reflects blue colour only
  E) white light is easily absorbed by the glass
  Show Answer
  The correct answer is B .
• Question 1236: A current flows in a series circuit containing a resistor, R, an inductor, L and a capacitor, C. Which of the following is true of the power dissipated in the circuit component(s)? Options:
  A) The power dissipated in L is greater than zero
  B) The power dissipated in R is zero
  C) The sum of the power dissipated in L and C is equal to that in R
  D) The sum of the power dissipated in L and C is greater than in R
  E) The sum of the power dissipated in L and C is zero
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  The correct answer is E .
• Question 1237: Two thermo flasks of volume Vx and Vy are filled with liquid water at an initial temperature of 0^oC. After sometime the temperature were found to be 9x, 9y, respectively. Given that $\frac{Vx}{Vy}$ = 2 and $\frac{\theta x}{\theta y}$ = $\frac{1}{2}$ the ratio of the heat flow into the flask is Options:
  A) $\frac{1}{4}$
  B) $\frac{1}{2}$
  C) 4
  D) 1
  E) 2
  Show Answer
  The correct answer is D .
• Question 1238:

  Water shows anomalous behaviour

  Options:
  A) below 0^oC
  B) between 0^oC and 4^oC
  C) at exactly 4^oC
  D) between 4^oC and 100^oC
  E) above 100^oC
  Show Answer
  The correct answer is B .
• Question 1239: A car of mass 1500 kg goes round a circular curve of radius 50m at a speed of 40 ms^-1. The magnitude of the centripetal force on the car is ? Options:
  A) 4.8 x 10⁴ N
  B) 4.8 x 10³ N
  C) 1.2 x 10³ N
  D) 1.2 x 10² N
  Show Answer
  The correct answer is A .
• Question 1240:

  A body moves in SHM between two point 20m on the straight line Joining the points. If the angular speed of the body is 5 rad/s. Calculate its speed when it is 6m from the center of the motion.

  Options:
  A) 20 m/s
  B) 30 m/s
  C) 40 m/s
  D) 50 m/s
  Show Answer
  The correct answer is C .