Question:
Which one of the following is NOT due to total internal reflection?
Which one of the following is NOT due to total internal reflection?
Show Hint
If light actually crosses the boundary (like water to air), it's Refraction. If it bounces back, it's Reflection.
Updated On: May 13, 2026
- Brilliance of a diamond.
- Working of an optical fibre.
- Mirage on a hot summer day.
- Difference between apparent and real depth of a water body.
Show Solution
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Total Internal Reflection (TIR) occurs when light travels from a denser to a rarer medium at an angle greater than the critical angle.
Step 2: Meaning
Refraction is the bending of light as it passes from one medium to another.
Step 3: Analysis
Diamonds, optical fibers, and mirages all rely on TIR. However, the difference between apparent and real depth is a result of simple refraction as light passes from water to air.
Step 4: Conclusion
Therefore, the depth phenomenon is caused by refraction, not total internal reflection. Final Answer: (D)
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