To what degree the edges of optical flats are bevelled? – McqOptions

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1.	To what degree the edges of optical flats are bevelled?
A.	30<sup>o</sup>
B.	45<sup>o</sup>
C.	60<sup>o</sup>
D.	90<sup>o</sup>
Answer» C. 60<sup>o</sup>

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