1.

An x-ray tube is operating at 30 KV then the minimum wavelength of the x-rays coming out of the tube is -

A. \[1.24\overset{\text{o}}{\mathop{\text{A}}}\,\]
B. \[0.413\overset{\text{o}}{\mathop{\text{A}}}\,\]
C. \[124\overset{\text{o}}{\mathop{\text{A}}}\,\]
D. \[0.13\overset{\text{o}}{\mathop{\text{A}}}\,\]
Answer» C. \[124\overset{\text{o}}{\mathop{\text{A}}}\,\]


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