The least diffraction occurs for
a. ? < d.
b. ? = d.
c. ? > d.
d. none of these; that is, it makes no difference.
a
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A. All forms of potential energy B. Elastic potential energy only C. Gravitational and elastic potential energy only D. Gravitational potential energy only
The entropy of the universe remains constant during a reversible adiabatic change
Indicate whether the statement is true or false
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