Physics-
General
Easy

Question

The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2.

  1. 1.2    
  2. 1.25    
  3. 2.20    
  4. 2.25    

The correct answer is: 1.2


    Least count LC
    equals fraction numerator P i t c h over denominator N u m b e r blank o f blank d i v i s i o n s blank o n blank c i r c u l a r blank s c a l e end fraction
    equals fraction numerator 0.5 over denominator 50 end fraction equals 0.01 blank m m
    Now, diameter of ball
    equals open parentheses 2 cross times 0.5 blank m m close parentheses plus open parentheses 25 minus 5 close parentheses open parentheses 0.01 close parentheses equals 1.2 m m

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