Problem: 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 of a wavelength.b) both waves change phase by 1800 as they are reflected.c) one beam changes phase by 1800 when it is reflected.d) both waves have a through.

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The center spot undergoes destructive interference. Destructive interference occurs when:

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Problem Details

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 of a wavelength.

b) both waves change phase by 1800 as they are reflected.

c) one beam changes phase by 1800 when it is reflected.

d) both waves have a through.

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