1.

A plane glass plate is placed over a various coloured letters (violet, green, yellow, red). The letter which appears to raised more (1) Yellow (2) Violet (3) Red (4) Green

Answer»

Correct option (2) Violet    

Explanation:

SN = t (1-1/h) As n increases, 1/h decreases and (1- 1/h) increases.

∴  SN is more for that colour, for which n is more

Among the given colours n is more for violet. 

Therefore it appears to be raised more.



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