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← ScienceWhich phenomenon occurs when multiple coherent laser beams interfere?
A)Speckle pattern intensification occurs✓
B)Wavelength shifts towards infrared
C)Beam polarization becomes randomized
D)Overall energy density is diminished
💡 Explanation
Speckle pattern intensification occurs because coherent beams undergo constructive and destructive interference, creating bright and dark spots characteristic of speckle. This results from optical path length differences, therefore, resulting in grainy texture rather than diminishing uniformly.
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