A Certain Crystal Has an Interatomic Spacing of 0

question 92

Multiple Choice

A certain crystal has an interatomic spacing of 0.142 nm. If a beam of electrons moving with a speed of 1400 m/s is diffracted from this crystal, what is the de Broglie wavelength of the electron?

• A) 420 nm
• B) 130 nm
• C) 260 nm
• D) 502 nm
• E) 520 nm

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Definitions:

Taste Pore

An opening on the surface of the taste bud through which tastants (taste substances) enter.

Taste Hair

Microscopic hair-like structures on taste buds that interact with food molecules to perceive taste.

Visual Acuity

The clarity or sharpness of vision, measured by the ability to discern letters or numbers at a specific distance according to a standard chart.

Fovea Centralis

Depression in the middle of the macula where there are only cones and no blood vessels.