If a piece of plane glass is placed on a word with letters of different colours, then the colour of the letter which will appear to be least raised is

Question

If a piece of plane glass is placed on a word with letters of different colours, then the colour of the letter which will appear to be least raised is, red, green, yellow, violet

MARKS App · Accepted Answer

R e f r a c t i v e i n d e x μ = r e a l d e p t h a p p a r e n t d e p t h Refractive index is maximum for violet colour and minimum for red colour. Hence, letter which appears minimum raised are red.

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