If an X-Ray Beam of Wavelength 1

question 53

Multiple Choice

If an x-ray beam of wavelength 1.4 × 10^-10 m makes an angle of 30° with a set of planes in a crystal causing first order constructive interference,what is the plane spacing?

• A) 0.28 nm
• B) 0.070 nm
• C) 0.32 nm
• D) 0.16 nm
• E) 0.14 nm

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Definitions:

Id

In Freudian psychoanalysis, the part of the mind in which innate instinctive impulses and primary processes are manifested.

Superego

In psychoanalytic theory, the part of the personality that acts as a moral center, enforcing societal norms and values and controlling the desires of the id.

Psychic Energy

A concept in psychoanalytic theory referring to the force or drive behind human behavior, emotions, and thoughts.

Libido

Libido, in psychoanalytic theory, is the energy derived from sexual instincts and desires that drive individual behavior and psychological processes.