[Solved] Of the following, which ratio defines the etch factor?

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Q.	Of the following, which ratio defines the etch factor?
A.	etching depth to undercut
B.	undercut to etching depth
C.	undercut to mask area
D.	mask area to undercut
Answer» B. undercut to etching depth
Explanation: etch factor is defined as the ratio of undercut to etching depth.

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