A General Condition for Two Coherent Waves to Undergo Constructive

question 55

Multiple Choice

A general condition for two coherent waves to undergo constructive interference is that

• A) their phase difference is zero.
• B) their phase difference is π/2 rad.
• C) their phase difference is ±π/2 rad.
• D) their phase difference is an even integral multiple of π rad.
• E) their phase difference is an odd integral multiple of π rad.

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Definitions:

Water

A molecule composed of two hydrogen atoms bonded to one oxygen atom, essential for all forms of life.

Helium

The second lightest and second most abundant element in the universe, a noble gas that remains liquid at the lowest temperatures.

Lewis Structure

A diagrammatic method for representing the valence electron configuration of atoms, ions, and molecules, indicating bonds and lone pairs.

Lewis Structures

Lewis structures are diagrams that represent the valence electrons of atoms within a molecule, indicating the bonds between atoms and the lone pairs of electrons.