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A plane glass slab is kept over various colour letters, the letter which appears least raised is :
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The correct answer is:
red
Refractive index
$\mu=\frac{\text { real depth }}{\text { apparent depth }}$
For red colour, refractive index is minimum, i.e., it will have maximum apparent depth and hence, appears least raised.
$\mu=\frac{\text { real depth }}{\text { apparent depth }}$
For red colour, refractive index is minimum, i.e., it will have maximum apparent depth and hence, appears least raised.
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