The Center Spot of Newton's Rings Is Dark

question 84

Multiple Choice

The center spot of Newton's rings is dark.This destructive interference occurs because:

• A)the two beams travel distances that are different by half a wavelength.
• B)both waves change phase by 180° as they are reflected.
• C)one beam changes phase by 180° when it is reflected.
• D)both waves have a trough.

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Definitions:

Export Duties

Taxes imposed on goods shipped out of a country.

Intermediary

A third party that acts as a mediator or middleman between two entities in a business transaction, facilitating the process.

Indirect Exporting

A method of entering foreign markets by selling products to intermediaries, who in turn sell them to customers in the target market, rather than direct exporting.

Harley-Davidson

An iconic American motorcycle manufacturer known for its heavyweight motorcycles and distinctive brand culture.