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प्रश्न
In the following figure, show two rays A and B travelling from water to air. If the critical angle for water- air surface is 48°, complete the ray diagram showing the refracted rays for each. State conditions when the ray will suffer total internal reflection.
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उत्तर
The necessary conditions for total internal reflection to occur are
- Light must travel from a denser medium to a rarer medium.
- The angle of incidence must be greater than the critical angle.
In this case, the angle of incidence. ∠ i > 48°
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संबंधित प्रश्न
Name the factors affecting the critical angle for the pair of media.
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is ______.
Write the necessary conditions for the phenomenon of total internal reflection to
occur ?
Name the factors affecting the critical angle for the pair of media.
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.
Choose the correct option.
Consider the following phenomena/ applications: P) Mirage, Q) rainbow, R) Optical fibre and S) glittering of a diamond. Total internal reflection is involved in
The entire light is reflected back into the denser medium is called ______.
State the condition under which total internal reflection occurs. Give the mathematical expression for total internal reflection.
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.
If even one of the two required conditions for total internal reflection is missing, then:
