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Time left 140.55 Select what type of length standard is preferred in industry for precision measuring Select one O End standards are preferred in modern industry Ob Attributes standards are preferred in modern industry Oc Une standards are preferred in modern industry Variables standards are preferred in modern industry, Clear my choice Select the definition of the international Metre in quantitative terms Select one: OaThe duration of 192,631,770 cycles of microwave light absorbed or emitted by the hyperline transition of caesium 133 atoms in their ground state undisturbed by external fields. b. The length of the path travelled by light in vacuum during a time interval of 1299 792 456 of a second, Oc Constant current which, if maintained in two straight parallel conductors of infinite length of negligible circular cross-section, and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2 x 10^-7 newton per metre of length od The length of the path travelled by light in vacuum during a time interval of 1/599 792 458 of a second. Select the name given to equipment used to establish the metre in practical terms Select one: O. A He He Laser interferometer Ob A gauge block OC A HeNe Laser Interferometer Od An optical liat Select the definition of roughness as one of surface texture parameters, comment on its spacing and how it is created Select one O a Roughness deviations of much larger spacing Deviations occur due to work deflection, vibration tooling, and similar factors. Ob Roughness small finely-spaced deviations from nominal surface Determined by material characteristics and processes that formed the surface O Roughness predominant direction or pattern of the surface texture. Od Roughness - irregularities that occur occasionally on the surface Includes cracks, scratches inclusions, and similar detects in the surface