Question:
Which of the following is a necessary condition for total internal reflection?
Which of the following is a necessary condition for total internal reflection?
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Total internal reflection occurs when the angle of incidence in the denser medium exceeds the critical angle.
Updated On: Apr 10, 2025
- The angle of incidence in the denser medium must be greater than the critical angle for the two media
- The angle of incidence in the rarer medium must be greater than the critical angle for the two media
- The angle of incidence in the denser medium must be lesser than the critical angle for the two media
- The angle of reflection in the denser medium must be greater than the critical angle for the two media
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The Correct Option is A
Solution and Explanation
Step 1: Condition for total internal reflection.
Total internal reflection occurs when light passes from a denser medium to a rarer medium, and the angle of incidence in the denser medium exceeds the critical angle.
Step 2: Critical angle.
The critical angle is the angle of incidence beyond which the light cannot pass into the rarer medium but is entirely reflected back into the denser medium.
Total internal reflection occurs when light passes from a denser medium to a rarer medium, and the angle of incidence in the denser medium exceeds the critical angle.
Step 2: Critical angle.
The critical angle is the angle of incidence beyond which the light cannot pass into the rarer medium but is entirely reflected back into the denser medium.
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