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Resolution of an instrument is

  • A.how close its reading is to the true value
  • B.the ratio of its output to its input
  • C.the smallest change in input it can detect
  • D.the largest input it is able to indicate

Answer: C

Correct answer: the smallest change in input it can detect

Resolution is the fineness of discrimination: on a digital instrument, one count of the least significant digit; on an analogue one, the smallest scale division that can be judged. It is often confused with accuracy, but adding digits to a display improves only the resolution.

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