A Laser Beam (λ = 694 Nm) Is Incident on Two

question 45

Multiple Choice

A laser beam (λ = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in m) will the bright interference fringes be on the screen 5.00 m from the double slits?

• A)3.47 × 10−3
• B)3.47 × 10−2
• C)3.47 × 10−4
• D)3.47 × 10−6
• E)3.47 × 10−5

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Definitions:

Dullness

A lack of sharpness or liveliness; bluntness in sensation, sound, or pain, often associated with medical examinations.

Mydriatic

A substance used to dilate the pupils for ophthalmological examination or treatment.

Miotic

Related to or causing the constriction of the pupil of the eye.

Pupil

The black circular opening in the center of the iris of the eye, through which light enters the eye to reach the retina.