A Beam of X-Rays of Different Frequencies Is Reflected at 10

question 24

Multiple Choice

A beam of X-rays of different frequencies is reflected at 10 degrees off a crystal of interatomic spacing 0.2 nm.Which X-ray wavelength is preferentially reflected?

• A)0.0943 nm
• B)0.139 nm
• C)0.069 5 nm
• D)1.02 * 10-10 m
• E)3.47 * 10-11 m

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Definitions:

Mental Categories

The classifications of cognitive information into organized groups in the brain, facilitating understanding and memory.

Simultaneously

Occurring, existing, or done at the same time as something else, indicating a concurrent action or event.

Number System

A mathematical system for representing and working with numbers, such as the decimal or binary systems.

Robert Siegler

A developmental psychologist known for his research on children's thinking and adaptive strategy choice model explaining how children learn and solve problems.