The Path Difference Between Two Waves Is 5m

question 1

Multiple Choice

The path difference between two waves is 5m. If the wavelength of the waves emitted by the two sources is 4m, what is the phase difference (in degrees) ?

• A) 90
• B) 400
• C) 1.57
• D) 7.85
• E) 15

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Definitions:

Replicability

The scientific requirement that other researchers be able to use the same procedures as an initial investigator did and obtain the same results.

Experimentation

The process of conducting tests or trials in a controlled environment to discover, prove, or examine the validity of hypotheses or the effect of variables.

Procedure

A series of actions or steps taken to achieve a specific purpose.

Reliability

The scientific requirement that when the same behavior is measured on two or more occasions by the same or different observers, the measurements must be consistent with each other.