Quiz  /  Wave Optics Class 9 MCQ Questions With Answers

  • 1. 
    Based on the image, which medium has a larger index of refraction?

  • Medium 1 has a larger index of refraction.
  • Medium 2 has a larger index of refraction.
  • Both mediums have the same index of refraction.
  • Cannot be determined.

  • 2. 
    What type of mirror is this

  • concave
  • convex
  • translucent
  • plano

  • 3. 
    Fiber optic cables work because of the principle of _____.

  • total internal refraction
  • incomplete internal refraction
  • total internal reflection
  • partial internal reflection

  • 4. 
    How is light affected by an increase in the index of refraction?

  • Its frequency increases
  • Its frequency decreases
  • Its speed increases
  • Its speed decreases

  • 5. 
    The following type of light source (glow in the dark) is

  • Incandescence
  • Phosphorescence
  • Chemiluminescence
  • Fluorescence

  • 6. 
    Choose the correct statement that describes what happens to the ray of light if the critical angle is 48o and the angle of incidence is 48o

  • refract
  • totally internally reflect
  • travel along the boundary

  • 7. 
    Do we really see things upside down

  • yes
  • no, it's a myth

  • 8. 
    Refraction is waves bending because of

  • edges of a slit or thin object
  • speed of wave changes
  • dark matter
  • gravity

  • 9. 
    The following is an example of?

  • Fluorescence
  • Bioluminescence
  • Chemiluminescence
  • Electric Discharge

  • 10. 
    In the formula m = hi/ho, the variable "m" refers to ___.

  • the height of the image
  • the height of the object
  • the focal point
  • how reduced or enlarged the image is compared to the object

  • 11. 
    What type of image does this lens form?

  • Virtual image
  • Real Image
  • No Image

  • 12. 
    Diffraction is waves bending because of

  • edges of a slit or thin object
  • speed of wave changes
  • dark matter
  • gravity
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