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प्रश्न
State the relation between the critical angle and the absolute refractive index of a medium.
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उत्तर
`mu = 1/(sin c)` or `sin c = 1/mu`where ‘c’ is the critical angle and ‘μ’ is the absolute refractive index.
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संबंधित प्रश्न
What do you understand by the deviation produced by a prism? Why is it caused?
The observation made by Swarali while doing the experiment is given below. Based on these write answers to the questions:
Swarali found that the light ray travelling from the denser medium to rarer medium goes away from the normal. If the angle of incidence (i) is raised by Swarali, the angle of refraction (r) went on increasing. However, after certain value of the angle of incidence the light ray is seen to return back into the denser medium.
Questions:
- What is the specific value of∠i called?
- What is the process of reflection of incident rays into denser medium called?
- Draw the diagrams of three observations made by Swarali.
How does a ray of light bend when it travels from rarer to denser medium
How does a ray of light bend when it travels from denser to rarer medium.
What is meant by the term ‘critical angle’?
A ray of light is incident on a glass surface at an angle of 50° with the corresponding angle of refraction 30°. Find the value of the R.I. of glass.
Critical angle of light passing from glass to air is maximum for ____________.
A bundle of glass threads, each of which is capable of transmitting messages using light waves is called ______.
A Rainbow is a beautiful natural phenomenon formed because of the following:
Observe the given figure of the raindrop and answer the following questions:
- Label A and B of the given diagram. Why colour will deviate most.
- Name the phenomenon shown in label C.
