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प्रश्न
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the ______.
पर्याय
reflection
refraction
dispersion
total internal reflection
उत्तर
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the total internal reflection.
Explanation:
If the angle of incidence is larger than the critical angle, a light beam that is travelling from an optically denser to a rarer medium reflects back into the denser medium.
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संबंधित प्रश्न
Which colour of light has a higher critical angle? Red light or green light.
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(a) Which principle in optics is made use of in endoscopy?
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(c) In what way do you appreciate the response of the doctor on the given situation?
How does a ray of light bend when it travels from when it is normal to the interface of the two media.
How are critical angles related to the refractive index of the medium?
The resultant `vec"R"` of `vec"P"` and `vec"Q"` is perpendicular to `vec"P"`. Also `|vec"P"|=|vec"R"|`. The angle between `vec"P"` and `vec"Q"` is ______.
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Total internal reflection can take place only if light is travelling from ______.
What are the examples of total internal reflection in nature?
- Assertion (A): Propagation of light through an optical fibre is due to total internal reflection taking place at the core-cladding interface.
- Reason (R): Refractive index of the material of the cladding of the optical fibre is greater than that of the core.
