1.

When is the wave interference strong?

A. When the paths taken by all of the interfering waves are greater than the coherence length
B. When the paths taken by all of the interfering waves are lesser than the coherence length
C. When the paths taken by all of the interfering waves are equal than the coherence length
D. When the paths taken by all of the interfering waves are independent of the coherence length
Answer» C. When the paths taken by all of the interfering waves are equal than the coherence length


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