Which type of line is used to represent hidden edges or surfaces in a technical drawing, as per BIS SP 46-2003?
Dashed thin line
According to BIS SP 46-2003, a dashed thin line is used to represent hidden edges or surfaces in a technical drawing. This standard outlines various line types and their specific applications in technical drawings for consistent and clear communication. Other line types, such as continuous thick lines, represent visible outlines, while chain thin lines and continuous thin lines have different designated uses within the standard.
The correct answer is option 2 because it adheres to the established conventions of technical drawing as defined by the BIS SP 46-2003 guidelines. Using a dashed line clearly distinguishes hidden features from visible ones, preventing misinterpretations of the drawing.
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