Quiz  /  Wave Optics Class 11 MCQ Questions With Answers

  • 1. 
    If it takes a waves 2.0 s to travel a distance of 10 meters, what is the wave speed?

  • 0.2 m/s
  • 5 m/s
  • 12 m/s
  • 20 m/s

  • 2. 
    The bending of a wave as it moves around an obstacle or passes through a narrow opening.

  • Absorption
  • Diffraction
  • Reflection
  • Refraction

  • 3. 
    In the diagram shown, light is traveling toward a mirror and reflecting off of it. The angle labeled as A is known as the...

  • angle of incidence
  • angle of reflection
  • angle of refraction
  • normal angle

  • 4. 
    When experiencing __________________ two waves pass through each other and their amplitudes combine to create a wave with an amplitude that larger than either of the individual waves.

  • Reflection
  • Refraction
  • Constructive Interference
  • Destructive Interference

  • 5. 
    The image formed in this lens is

  • beyond f, upright, smaller, virtual
  • inside f, inverted, smaller, real
  • beyond f, inverted, smaller, real
  • inside f, upright, smaller, virtual

  • 6. 
    The pencil in the glass of water appears bent due to ....

  • reflection
  • refraction
  • mirrors
  • focal point

  • 7. 
    What must be true about waves which reflect off of fixed boundaries?

  • Their amplitude increases.
  • Their wavelength increases.
  • They become inverted.
  • They remain erect.

  • 8. 
    The equation used to determine how much the path of a ray of light is bent when it passes into another medium is known as...

  • Ohm's Law
  • Coulomb's Law
  • The Law of Reflection
  • Snell's Law

  • 9. 
    Using the fact that light travels at 3.0x108 m/s find the frequency of yellow light. (wavelength of yellow light is 5.85 x 10-7 m)

  • 5.12 x 1014 Hz
  • 176 Hz
  • 0.14 Hz
  • 3 x 108 Hz

  • 10. 
    What type of image is formed when light converges after passing through a lenses or reflecting off of a mirror?

  • an inverted virtual image
  • an erect real image
  • an inverted real image
  • an erect virtual image

  • 11. 
    If a wave from one slit of a Young's double-slit experiment set-up arrives at a point on the screen one wavelength behind the wave from the other slit, what is observed at that point?

  • dark fringe
  • bright fringe
  • multi-colored fringe
  • gray fringe, neither bright nor dark

  • 12. 
    An image that forms at a location from which the light rays appear to come but do not actually come

  • real
  • virtual
  • critical
  • focal

  • 13. 
    When an object is placed between the focal point and the convex lens, the image produced is ___.

  • real, reduced, and inverted
  • real, enlarged, and inverted
  • virtual, enlarged, and upright
  • virtual, reduced, and upright

  • 14. 
    This image is...

  • Inverted and smaller
  • inverted and bigger
  • not inverted and smaller
  • not inverted and bigger

  • 15. 
    A convex lens does what to rays

  • diverges
  • converges
  • implodes
  • merges

  • 16. 
    Calculate the wavelength of light that has a frequency of 5.2 x 1012 Hz.

  • 5.8 x 10 -5 m
  • 5.8 x 10 -7 m
  • 5.19 x 10 14 m
  • 1.56 x 10 23 m

  • 17. 
    When light travels from air into another medium with a higher index of refraction, what happens to the speed at which it travels.

  • it increases
  • it decreases
  • it remains constant
  • this is impossible

  • 18. 
    Which of the following descriptions best describes a image from a plane (i.e. flat) mirror?

  • virtual, erect, same size as object
  • real, erect, same size as object
  • virtual, inverted, same size as object
  • real, inverted, same size as object

  • 19. 
    ______________________ occurs when waves combine to create a wave with a LOWER amplitude.

  • Diffraction
  • Constructive interference
  • Destructive interference
  • Refraction

  • 20. 
    If a wave is traveling at 15 m/s and has a frequency of 5.0 Hz, what is its wavelength?

  • 0.33 m
  • 3 m
  • 20 m
  • 75 m

  • 21. 
    Passing a current through a solenoid will produce

  • a magnetic field
  • an electric field
  • a current field
  • nothing is produced

  • 22. 
    When the frequency of a wave increases, what happens to the wavelength?

  • The wavelength is not directly affected by the frequency of a wave.
  • The wavelength increases.
  • The wavelength decreases.
  • More specific information is needed to form a conclusion about the wavelength.

  • 23. 
    When you go out to sun, ultraviolet light rays give you your tan. What is the wavelength of this light if it has a frequency of7.74 X 1014 Hz?

  • 3.88 x 10-7 m
  • 3.26 x 10-2 m
  • 2.58 x 106 m
  • 2.32 x 1023 m

  • 24. 
    In the diagram, what does the arrow labeled E indicate?

  • crest
  • trough
  • wavelength
  • amplitude
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