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Questions and Answers
What is the principle that optical fibres work on?
What is the principle that optical fibres work on?
- Diffraction
- Total internal reflection (correct)
- Reflection
- Refraction
What is the phenomenon in which light is totally reflected from a denser-to-rarer medium boundary, at an angle greater than critical angle, known as?
What is the phenomenon in which light is totally reflected from a denser-to-rarer medium boundary, at an angle greater than critical angle, known as?
- Total internal reflection (correct)
- Diffraction
- Reflection
- Refraction
When a light ray passes from rarer medium to denser medium, how is it bent?
When a light ray passes from rarer medium to denser medium, how is it bent?
- Away from the normal
- Toward the normal (correct)
- Perpendicular to the normal
- Parallel to the normal
What law relates the angles of incidence and refraction to the refractive indices of the two media?
What law relates the angles of incidence and refraction to the refractive indices of the two media?
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In which direction is a light ray bent when it passes from a denser medium to a rarer medium?
In which direction is a light ray bent when it passes from a denser medium to a rarer medium?
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