Two Optically Flat Plates Lie One on Top of the Other.A

question 39

Multiple Choice

Two optically flat plates lie one on top of the other.A sheet of paper 0.1 mm thick is inserted between the plates at one edge.When the plates are illuminated by light of wavelength 589 nm,the number of interference fringes observed by reflected light is approximately

• A)470
• B)340
• C)294
• D)170
• E)123

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Definitions:

Escalator Clause

is a contract provision that allows for an automatic adjustment in prices or wages based on fluctuations in certain economic indicators.

Costs Change

Alterations in the financial expenditures associated with producing or obtaining goods and services.

Indirect Costs

Costs that are not directly accountable to a cost object, such as overhead and administrative expenses.

Production Plant

A facility where goods are manufactured or assembled, using labor and machinery.