Which outcome occurs when two spatially separated but coherent laser beams illuminate a rough surface?

💡 Explanation

A speckle pattern becomes visible because constructive and destructive interference occurs; this phenomenon is modal interference which reveals surface variations beyond resolution limits; therefore a speckle pattern appears, rather than other optical effects which require perfectly smooth surfaces.

• Which risk increases when neutron absorbent material degrades within a nuclear reactor's control rods?
• Which outcome occurs when a Type II superconducting magnet quenches?
• Which consequence results when ice slurry freezes adhering to a heat exchanger?
• Which effect arises when incoherent beams overlap unevenly?
• Which outcome occurs following excessive tritium buildup in a CANDU reactor?
• Which outcome occurs when hydrogen gas is rapidly decompressed?