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A plane glass slab is placed over variou...

A plane glass slab is placed over various coloured letters. The letter which appears to be raised the least is

A

blue

B

violet

C

green

D

red

Text Solution

Verified by Experts

The correct Answer is:
D
`mu=(R)/(A)` (R=real depth, A= apparent depth)
Here, `A_(r)gtA_(v) ( :. Mu_(v)gtmu_(r))`
So, the rise will be the least for red colour.
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