The screw of a spherometer moves by 4 mm. when its circular scale is g – InterviewSolution

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1.	The screw of a spherometer moves by 4 mm. when its circular scale is given four complete rotations. If circular scale has 200 divisions, calculate pitch and least count of the spherometer.
Answer» `Pitch = ("distacne moved")/("number of complete rotations")` `(4mm)/(4) = 1mm` Least count = `("Pitch")/("no. fo divisions on circular scale")` `=(1mm)/(200) = 0.005 mm = 0.0005 cm`

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