Two Beams of Coherent Light Start Out at the Same

question 15

Multiple Choice

Two beams of coherent light start out at the same point in phase and travel different paths to arrive at point P. If the maximum constructive interference is to occur at point P, the two beams
Must travel paths that differ by

• A) a whole number of wavelengths.
• B) a whole number of half-wavelengths.
• C) an odd number of half-wavelengths.

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Definitions:

Lineage Group

A social group tracing descent from a common ancestor, thus forming a basic unit in the social structure of many societies.

Kinship Group

A social network of relatives within which individuals possess certain mutual rights and obligations.

Mitochondrial DNA

Genetic material found in mitochondria, distinct from nuclear DNA, and inherited matrilineally, used in studies of genetic ancestry and evolutionary biology.

Geneticist

A scientist who studies genetics, exploring the inheritance of traits and the structure, function, and behavior of genes.