A Beam of X-Rays of Wavelength 0

question 6

Multiple Choice

A beam of x-rays of wavelength 0.20 nm is diffracted by a set of planes in a crystal whose separation is 3.1*10^-8 cm.The smallest angle between the beam and the crystal planes for which a reflection occurs is:

• A)0.70 rad
• B)0.33 rad
• C)0.066 rad
• D)0.033 rad
• E)0.0033 rad

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Definitions:

Lateral Fissure

A deep groove in the brain that separates the temporal lobe from the frontal and parietal lobes.

Longitudinal Fissure

The deep groove that separates the two hemispheres of the brain.

Central Fissure

A deep groove in the brain's cortex that separates the frontal lobe from the parietal lobe.

Frontal Lobes

Regions of the brain involved in decision making, problem solving, control of purposeful behaviors, consciousness, and emotions.