Question
Download Solution PDFTotal internal reflection occurs when light travel from
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Total internal reflection (TIR): Total internal reflection (TIR) occurs at the interface of two transparent medium when the ray of light travels from a denser medium to a rarer medium.
- It is the reflection of light within the same medium when a ray of light is incident at the interface of two medium at an angle of incidence which is greater than the critical angle for the pair of media i.e. i > ic
- The critical angle is the angle of incidence in the denser medium for which the angle of refraction in the rarer medium is 90°.
EXPLANATION:
- When light travels from a denser medium to a rarer medium, it bends away from the normal.
- When the angle of incidence is more than the critical angle then total internal reflection occurs. So option 4 is correct.
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