The Center Spot of Newton's Rings Is Dark $\degree$ As They Are Reflected

question 56

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 \(\degree\) as they are reflected.
• C)one beam changes phase by 180 \(\degree\) when it is reflected.
• D)both waves have a trough.

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