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Mr. Dubey • 100.64K Points
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Q. best method for examining the surface finish. Visual, touch and scratch inspection methods are not as accurate as microscopic. In these methods, minute flaws can’t be detected.

  • (A) 0.0001 mm
  • (B) 0.001 mm
  • (C) 0.01 mm
  • (D) 0.1 mm
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Explanation by: Mr. Dubey
touch inspection method can tell which surface is rougher. in this method, the finger-tip is moved along the surface at a speed of about 25/sec and the irregularities of about 0.01 mm can be easily detected.

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