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Which outcome occurs when a green laser with high coherence illuminates a dense liquid containing suspended nanoparticles?

A)Increased particle sedimentation rate occurs
B)Speckle pattern due to constructive interference
C)Reduced laser power through Rayleigh scattering
D)Stable molecular bonds form instantly

💡 Explanation

Irregular scattering produces a speckle pattern because the coherence of the laser light causes constructive and destructive interference. Therefore, option B is correct rather than altering sedimentation, reducing power through incoherent scattering, or initiating bond formation, which require other conditions.

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