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The photo tool is exposed to which light source, in order to form a replica of image of the required geometry?

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in Advanced Machining by (962k points)
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 mentioned

I 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

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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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