Q.

05 mm.

A. 0.01 – 0.10 µm
B. 0.15 – 1.5 µm
C. 2.0 – 5.0 µm
D. 7.0 – 10.0 µm
Answer» B. 0.15 – 1.5 µm
Explanation: surface roughness value in ajm varies between 0.15 – 1.5 µm, depending on grain size.
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