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 351:

  

  Given the inductor of inductance 5mH, 10mH and 20mH connected in series, the effective inductance is

  Options:
  A) 0.35mH
  B) 3.50mH
  C) 2.90mH
  D) 35.0mH
  Show Answer
  The correct answer is D .
• Question 352:

  The motion of a body is simple harmonic if the?

  Options:
  A) acceleration is always directed towards a fixed point
  B) path of motion is a straight line
  C) acceleration is proportional to the square of the distance from a fixed point
  D) acceleration is constant and directed towards a fixed point
  Show Answer
  The correct answer is A .
• Question 353:

  

  The air column as shown above is set into vibration by the turning fork. In this State of resonance, the waves in the air column will be

  Options:
  A) stationary and transverse
  B) stationary and longitudinal
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is B .
• Question 354: A ray of light makes an angle of 35^o with a plane mirror. What is the angle of reflection? Options:
  A) 35^o
  B) 55^o
  C) 70^o
  D) 65^o
  Show Answer
  The correct answer is B .
• Question 355: The primary aim in high tension transmission is to Options:
  A) minimize electrical energy losses due to heat production
  B) increase the rate of energy transfer by using high voltage
  C) increase the current in the wire
  D) generate electricity at high current and low voltage
  Show Answer
  The correct answer is A .
• Question 356: By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens? Options:
  A) 15.0
  B) 2.5
  C) 1.5
  D) 0.4
  Show Answer
  The correct answer is B .
• Question 357:

  

  In the diagram above a beam of white light travels from a rare to a dense medium. What colours of light do the rays a, b and c respectively represents?

  Options:
  A) red, green and blue
  B) Green, red and blue
  C) Yellow , blue and red
  D) Blue , yellow and red
  Show Answer
  The correct answer is A .
• Question 358: A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, If the average distance between successive nodes on the wire is 45cm, find the speed of the transverse waves in the wire. Options:
  A) 27ms^-1
  B) 54ms^-1
  C) 90ms^-1
  D) 108ms^-1
  Show Answer
  The correct answer is A .
• Question 359: In a resonance tube experiment, if the fundamental frequency of the vibrating air column is 280Hz, the frequency of the third overtone is Options:
  A) 70Hz
  B) 840Hz
  C) 1120Hz
  D) 1960Hz
  Show Answer
  The correct answer is D .
• Question 360: As a result of air at the top of a barometer, the height of the mercury column is 73.5cm when it should be 75.0cm; the volume of the space above the mercury is 8.0cm³. Calculate the correct barometer height when the barometer reads 74.0cm and the volume of the space above the mercury is 6.0cm³. Options:
  A) 72.0cm
  B) 74.5cm
  C) 75.1cm
  D) 76.0cm
  Show Answer
  The correct answer is D .