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 321: An engineer intends to deviate a light ray from its path by 120^o through reflection from a plane mirror. Calculate the angle of incidence Options:
  A) 60^o
  B) 40^o
  C) 30^o
  D) 20^o
  Show Answer
  The correct answer is C .
• Question 322: A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain? Options:
  A) 60
  B) 6
  C) 6 x 10^-2
  D) 6 x 10^-3
  E) 0.6
  Show Answer
  The correct answer is C .
• Question 323: The distance between two successive crests of a wave is 15cm and the velocity 300ms^-1. Calculate the frequency. Options:
  A) 2.0x10²Hz
  B) 4.5x10³Hz
  C) 2.0x10³Hz
  D) 4.5x10²Hz
  Show Answer
  The correct answer is C .
• Question 324: The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz? Options:
  A) 7500m
  B) 300m
  C) 75m
  D) 15m
  Show Answer
  The correct answer is B .
• Question 325: If a spherical metal bob of radius 3cm is fully immersed in a cylinder containing water and the water level rises by 1cm, what is the radius of the cylinder? Options:
  A) 12cm
  B) 1cm
  C) 3cm
  D) 6cm
  Show Answer
  The correct answer is D .
• Question 326:

  

  In the diagram above, determine the r.m.s current

  Options:
  A) 31A
  B) 48A
  C) 60A
  D) 80A
  Show Answer
  The correct answer is B .
• Question 327: The relationship between L and the wavelength I of the stationary wave is Options:
  A) 2L = $\lambda$
  B) L = $\lambda$
  C) L = $\frac{\lambda }{3}$
  D) 4L = 3 $\lambda$
  Show Answer
  The correct answer is D .
• Question 328: An object 15cm high is 30cm from pin-hole camera. If the height of the image formed at the back of the camera is 10cm, the image distance is Options:
  A) 20cm
  B) 45cm
  C) 54cm
  D) 63cm
  E) 70cm
  Show Answer
  The correct answer is A .
• Question 329: The physical properties of sound waves can best be described by Options:
  A) reflection and diffraction
  B) polarization and reflection
  C) polarization and diffraction
  D) polarization and refraction
  Show Answer
  The correct answer is A .
• Question 330: Which of the following correctly, describes the image of an object, 4cm from a diverging lens of focal length 12cm? Options:
  A) The image is virtual, 3cm in front of the lens
  B) The image is real, 6cm behind the lens
  C) The image is virtual, 6cm in front of the lens
  D) The image is real, 3cm in front the lens
  Show Answer
  The correct answer is A .