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प्रश्न
Which colour of light has a higher critical angle? Red light or green light.
उत्तर
The critical angle for 'Red' colour is higher than that of green light.
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संबंधित प्रश्न
Name the factors affecting the critical angle for the pair of media.
The figure shows a ray of light falling normally on the face AB of an equilateral glass prism having refractive index`3/2`, placed in water of refractive index `4/3`.Will this ray suffer total internal reflection on striking the face AC? Justify your answer.
Write the necessary conditions for the phenomenon of total internal reflection to
occur ?
If a light ray does not undergo, refraction at the boundary between two media, the angle of incidence is:
Complete the following diagram to show the path of the ray of a single colour in the diagram as if enters in and emerges out of the prism. Mark the angles wherever necessary. (Critical angle for glass = 42°).
A ray of light is incident as a normal ray on the surface of separation of two different mediums. What is the value of the angle of incidence in this case?
Answer the following question.
Why is prism binoculars preferred over traditional binoculars? Describe its working in brief.
The critical angle is defined as the angle of incidence at which the total internal reflection starts to occur.
- 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.
