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प्रश्न
For which colour of white light, is the refractive index of a transparent medium the most?
For which colour of white light the refractive index of a transparent medium the most? Give the reason for your answer.
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उत्तर
The refractive index of a transparent medium is most for violet light.
The reason is that the speed of violet light is least in a transparent medium while the speed of red light is most in a transparent medium.
Notes
Students should refer to the answer according to their questions.
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संबंधित प्रश्न
Which colour of light travels fastest in any medium except air?
Observe the following figure and answer the questions given under it:
1) How many times does refraction take place in the above figure?
2) What happens to the ray of light when it passes from air to glass?
3) What happens to the ray of light when it passes from glass to air?
4) What are the rays AB and CD in the figure called?
5) Define refraction.
How can you bend light away from the normal?
The diagram alongside shows the refraction of a ray of light from air to a liquid.
- Write the values of (i) angle of incidence, (ii) angle of refraction.
- Use Snell’s law to find the refractive index of liquid with respect to air.
Fill in the blanks to complete the following sentence
The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be ……………….
A coin is places at the bottom of a beaker containing water (refractive index = 4/3) to a depth of 12 cm. By what height the coin appears to be raised when seen from vertically above?
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
Why does the sun appear bigger during sunset or sunrise?
