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SS2: PHYSICS - 3RD TERM

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  1. Waves I
    3 Topics
    |
    1 Quiz
  2. Light Waves
    3 Topics
    |
    1 Quiz
  3. Reflection of Light Waves at Plane Surfaces
    4 Topics
    |
    1 Quiz
  4. Curved Mirrors
    7 Topics
    |
    1 Quiz
  5. Refraction of Light
    7 Topics
    |
    1 Quiz
  6. Dispersion of White Light
    2 Topics
    |
    1 Quiz
  7. Refraction of Light through Lenses
    6 Topics
    |
    1 Quiz
  8. Application of Lenses in Optical Instruments
    10 Topics
    |
    1 Quiz
  9. Sound Waves
    7 Topics
    |
    1 Quiz
  10. Vibration in Springs & Pipes
    4 Topics
    |
    1 Quiz

Quizzes

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SS2: PHYSICS – 3RD TERM Refraction of Light Critical Angle & Refractive Index
Lesson 5, Topic 5
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Critical Angle & Refractive Index

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Topic Content:

  • Critical Angle & Refractive Index

Consider Fig. 5.4.1 below, where light travels from glass to a less dense medium, air, and the angle of incidence equals the critical angle.

Critical Angle Refractive Index
Fig. 5.5.1 Relationship between the critical angle and refractive index

The angle of incidence in the denser medium, when the angle of refraction in the less 

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