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A glass slab is placed over a page on which the word VIBGYOR is printed with each letter in corresponding colour. Then, which of the following is correct? A. The image of all the letters will be in the same place as that on paper B. Letter V is raised more C. Letter R is raised more D. None of the above |
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Answer» Due to refraction of light an object placed in a denser medium, when viewed from rarer medium appears to be at a lesser depth than its real depth. This depth is called the apparent depth. Apparent depth = real depth/ n Where, n = refractive index of the denser medium with respect to the rarer medium Violet light slows down more than red light, so it is refracted at a slightly greater angle, so refractive index (n) is maximum for the violet colour. Hence its apparent depth would be the least, the violet coloured letter V would be raised to the maximum. |
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