1.

The photo tool is exposed to which light source, in order to form a replica of image of the required geometry?(a) Infrared sources(b) Ultraviolet source(c) Normal light source(d) None of the mentionedI had been asked this question by my college director while I was bunking the class.The question is from PCM-Process Description topic in section Chemical Processes of Advanced Machining

Answer»

Correct answer is (b) ULTRAVIOLET source

The explanation is: Ultraviolet light SOURCES are USED to transfer the image of the REQUIRED geometry on to the resist, precisely.



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