The Diffusion Constant for Cu in Si, at Temperature 1394°C

question 3

Multiple Choice

The diffusion constant for Cu in Si, at temperature 1394°C is larger than that of Ge in Si by a factor of 3.58 × 10⁶. If, after a certain time, Ge diffuses an average distance of 1 ìm, how far on average does Cu diffuse during the same time interval?

• A)3.58 m
• B)3.78 mm
• C)1.89 mm
• D)1.89 ìm