[Solved] Which of the following properties of material affect the quality of holes obtained?

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Q.	Which of the following properties of material affect the quality of holes obtained?
A.	reflectivity
B.	absorption coefficient
C.	thermal conductivity
D.	all of the mentioned
Answer» D. all of the mentioned
Explanation: quality of holes depend on reflectivity, absorption coefficient, thermal conductivity, density, specific heat, and latent heat of material.

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