A magician during a show makes a glass lens `mu = 1.5` disappear in a through of liquid. What is the refractive index of the liquid ? Is the liquid wa

Question

A magician during a show makes a glass lens `mu = 1.5` disappear in a through of liquid. What is the refractive index of the liquid ? Is the liquid wa

A magician during a show makes a glass lens `mu = 1.5` disappear in a through of liquid. What is the refractive index of the liquid ? Is the liquid water ?

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

The refractive index of the liquid must be equal to 1.47 in order to make the lens disappear. This means, `n_(1)=n_(2)`. This gives `1//f`=0 or `fto infty`. The lens in the liquid will act like a plane sheet of glass. No, the liquid is not water. It could be glycerine.

5 views Answered 2023-02-05 15:29