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प्रश्न
A glass slab is placed over a page on which the word VIBGYOR is printed with each letter in its corresponding colour.
- Will the image of all the letters be in the same place?
- If not, the state which letter will be raised to the maximum. Give a reason for your answer.
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उत्तर
- The image of all the letters of the word VIBGYOR in their corresponding colours will not be at the same place.
- The letter of violet colour (i.e. V) appears to be raised maximum, while the letter of red colour (i.e. R) appears to be raised minimum.
Since apparent depth = `"real depth"/"refractive index"` and the refractive index of glass is most for the violet light while least for the red light, therefore the apparent depth is least for violet and most for the red.
संबंधित प्रश्न
State the dependence of angle of deviation On the wavelength of light
Write the relation between the angle of incidence and the angle of refraction for a medium.
How does the angle of minimum deviation produces by a prism change with increase in :
the refracting angle of prism?
Draw a diagram to show the splitting of white light into its constituent colours.
In an experiment of finding the refractive index of glass, if blue light is replaced by the red light, how will the refractive index of glass change? Give reason in support of your answer.
Why do the faces of persons sitting around campfire appear to shimmer?
How will you verify the laws of refraction or how the refractive index of glass is determined in the laboratory?
The speed of light in air is 3 × 108 ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.
The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in the figure. Which one of them is correct?
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| A | B | C | D |
