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To find index error for u when a knittin...

To find index error for u when a knitting needle of length `20.0cm` is adjusted between pole and object needle the separation between the indices of object needle and mirror was pbserved to be `20.2 cm` Index correction for u is .

A

`-0.2 cm`

B

`0.2 cm`

C

`-0.1 cm`

D

`0.1cm`

Text Solution

Verified by Experts

Index error (Excess reading) = Obsorved reading Actual reading
`=20.2 - 20.0 = 0.2cm` .
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