- #1

kelambumlm

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## Homework Statement

Find the angular radius of the tenth bright fringe in a Michelson interferometer

when the central-path difference (2d) is (i) 1.50 mm and (ii) 1.5 cm.

Assume the orange light of a krypton arc is used and that the interference is

adjusted in each case so that the first bright fringe forms a maximum at the

centre of the pattern.

## Homework Equations

2d sin theta = m lambda or

2d cos theta= m lamda

## The Attempt at a Solution

i confuse to use the equation.

theta= cos-1 or sin -1 (6057 armstrong x 10th) divide 1.50mm

the answer that i get is not logic.