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संबंधित प्रश्न
Write the relation between the refractive index and critical angle for a given pair of optical media?
Prove the statement.
A rainbow is the combined effect of the refraction, dispersion, and total internal reflection of light.
i) Observe the given figure and answer the following questions.
a) Identify and write the natural process shown in the figure.
b) List the phenomena which are observe in this process.
c) Redraw the diagram and show above phenomena in it.
Name the principle on the basis of which optical fibres work.
How are critical angles related to the refractive index of the medium?
Draw a diagram, properly labelled, to illustrate the use of a total reflecting prism (a right-angled isosceles prism) to turn a ray of light through 180°. Name an instrument in which this device is used.
Answer the following question.
Under what conditions are total internal reflection possible? Explain it with a suitable example.
The angle of minimum deviation produced by a thin glass prism in air is 'δ'. If that prism is immersed in water, the angle of minimum deviation will be ______.
( aμg = refractive index of glass w.r.t, air aμw = refractive index of water w.r.t. air)
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.
