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 31: Transistors are used for the Options:
  A) rectification of signals
  B) conversion of a.c to d.c
  C) amplification of signals
  D) conversion of d.c to a.c
  Show Answer
  The correct answer is C .
• Question 32: In an experiment to determine Young's Modulus for a wire, several loads are attached to the wire and the corresponding extension measured. The tensile stress in each case depends on the Options:
  A) load and the extension
  B) load and the radius of the wire
  C) radius of the wire and the extension
  D) extension and the original length of the wire
  Show Answer
  The correct answer is B .
• Question 33: The unit of inductance is Options:
  A) Weber
  B) Telsa
  C) Hertz
  D) Henry
  E) Farad
  Show Answer
  The correct answer is D .
• Question 34: The lower and upper fixed points marked on a mecury-in-glass thermometer are 210mm apart. The end of the mercury column in the tube is 49mm above the lower fixed point in a room. What is the temperature of the room in degrees Celsius? Options:
  A) 55.3^oC
  B) 23.3^oC
  C) 49.0^oC
  D) 16.1^oC
  E) 76.7^oC
  Show Answer
  The correct answer is B .
• Question 35: A gas at pressure PN-m^-2 and temperature 27^oC is heated to 77^oC at constant volume. The new pressure is Options:
  A) 0.85 PN-m^-2
  B) 0.86 PN-m^-2
  C) 1.16 PN-m^-2
  D) 1.18 PN-m^-2
  E) 2.85 PN-m^-2
  Show Answer
  The correct answer is C .
• Question 36: Which of the following obeys ohms laws? Options:
  A) electroytes
  B) metals
  C) diode
  D) glass
  Show Answer
  The correct answer is B .
• Question 37: Which of the following is TRUE of the particles emitted in radioactive disintegration? Options:
  A) the alpha particle is the helium nucleus H
  B) the alpha particle is lighter than the beta particle
  C) the alpha particle is deflected more than the beta particle in a magnetic field
  D) the beta particle is deflected more than the alpha particle in a magnetic field
  Show Answer
  The correct answer is D .
• Question 38: A concave lens of focal length 20cm form an image 1/2 the size of the object. The object distance is Options:
  A) 100cm
  B) $\frac{100}{q}$
  C) 60cm
  D) $\frac{60}{7}$
  E) None of the above
  Show Answer
  The correct answer is C .
• Question 39: Which of the following scientists postulated that moving particles exhibit wave properties? Options:
  A) Ernest Rutherford
  B) Erwin Schroedinger
  C) Frank Hertz
  D) Louis de Broglie
  E) Werner Heisenberg.
  Show Answer
  The correct answer is D .
• Question 40:

  

  In a resonance tube experiment, which is illustrated above, the velocity of sound in air is 327.68m/s, the frequency of the turning fork used is therefore

  Options:
  A) 128HZ
  B) 256HZ
  C) 512HZ
  D) 768HZ
  E) 1024HZ
  Show Answer
  The correct answer is C .