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The diagram above represents a portion of a micrometer screw gauge in which the horizontal...

Physics
WAEC 1996

The diagram above represents a portion of a micrometer screw gauge in which the horizontal scale is in millimetres. What is the reading on the instrument?

  • A. 3.72mm
  • B. 3.50mm
  • C. 3.30mm
  • D. 3.28mm
  • E. 3.22mm
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Correct Answer: Option E
Explanation

Micrometer screw gauge reading = Main scale reading + vernier scale reading 

                                                      =                       3  + 0.22   = 3.22mm


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