How thick is the foil, A fine metal foil separates one end

How thick is the foil

Reference no: EM13689888

Solve the given problem:

Problem: A fine metal foil separates one end of two pieces of optically flat glass. When light of wavelength 710nm is incident normally, 28 dark lines are observed (with one at each end).

1- How thick is the foil?

Please show work I think I have the solution just not positive.

Reference no: EM13689888

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