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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 | |