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प्रश्न
Express the refractive index μ of a medium in terms of the angle of incidence i in air and the angle of refraction r in a denser medium.
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उत्तर
If light travels from air into another denser medium, the refractive index ‘μ’ of the medium.
`μ="Sine of the angle of incidence in air"/"Sine of the angle of refraction in the denser medium"`
`μ=sin i/sin r`
संबंधित प्रश्न
In the given figure PQ and PR are the two light rays emerging from an object P. The ray PQ is refracted as QS.
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- Name the phenomenon that occurs if the angle of incidence ∠PQN is increased.
- The ray PR suffers partial reflection and refraction on the water-air surface. Give reason.
- Draw in the diagram the refracted ray for the incident ray PR and hence show the position of image of the object P by the letter P’ when seen vertically from above.
Total internal reflection can take place only if ______.
State one factor on which a critical angle for a given pair of media depends. The critical angle for the glass-air interface is 45° for the yellow light. Will it be equal to, less than or greater than 45° for (i) red light, (ii) blue light?
What is meant by the statement, ‘the critical angle for diamond is 24°’?
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Observe the given figure and write appropriate phenomenon of light in the box.
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A Rainbow is a beautiful natural phenomenon formed because of the following:
A ray of light passes through a prism of refractive index `sqrt2` as shown in the figure. Find:
- The angle of incidence (∠r2) at face AC.
- The angle of minimum deviation for this prism.
