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 wave disturbance travelling in air enters a medium in which its velocity is less than that in air. Which of the following statements is true about the wave medium? Options:
  A) both the frequency of the wave and the wavelength are decreased
  B) the frequency of the wave is decreased while the wavelength is increased
  C) the frequency of the wave is unaltered while the wavelength is decreased
  D) the frequency of the wave is decreased while the wavelength is unaltered
  Show Answer
  The correct answer is C .
• Question 1232: A household refrigerator is rated 200 watts. If electricity costs 5k per kWh, what is the cost of operating it in 20 days? Options:
  A) N4.80
  B) N48.00
  C) N480.00
  D) N4800.00
  Show Answer
  The correct answer is C .
• Question 1233:

  

  A body is acted upon by forces applied at points P and Q as shown above their resultant is equal to

  Options:
  A) 2√5N in adirection N 56◦ E
  B) 2√5N in adirection N 56◦ W
  C) 2√13N in adirection N 56◦ E
  D) 2√13N in adirection N 56◦ W
  E) √10N in adirection N 56◦ E
  Show Answer
  The correct answer is C .
• Question 1234:

  A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is?

  Options:
  A) 3m
  B) 5m
  C) 6m
  D) 10m
  Show Answer
  The correct answer is C .
• Question 1235:

  The sensitivity of a thermometer is

  Options:
  A) All of the above
  B) how quickly a temperature change can be detected
  C) the difference between the maximum and the minimum temperature
  D) the smallest temperature change that can be detected or measured
  Show Answer
  The correct answer is D .
• Question 1236:

  

  From the diagram above, the measuring accuracy of the micrometer screw gauge is

  Options:
  A) 4.78mm
  B) 4.16mm
  C) 4.66mm
  D) 4.70mm
  Show Answer
  The correct answer is B .
• Question 1237: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads? Options:
  A) o
  B) $\frac{1}{2}$
  C) 2
  D) 8
  E) 32
  Show Answer
  The correct answer is D .
• Question 1238: A transistor function mainly as a Options:
  A) switch and amplifier
  B) rectifier and an amplifier
  C) charge storer and an amplifier
  D) charge storer and a switch
  Show Answer
  The correct answer is A .
• Question 1239:

  The resultant of two forces 12N and 5N is 13N. What is the angle between the two forces?

  Options:
  A) 0^o
  B) 45^o
  C) 90^o
  D) 180^o
  Show Answer
  The correct answer is C .
• Question 1240:

  

  The diagram above represents a transverse electromagnetic wave travelling with speed 3.0 x 10⁸ms^-1. What is the frequency of the wave.

  Options:
  A) 3.0 x 10⁷Hz
  B) 9.0 x 10⁷Hz
  C) 1.0 x 10⁹Hz
  D) 3.0 x 10⁹Hz
  Show Answer
  The correct answer is D .