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Class 11 NEET Physics Physical World, Units and Measurements

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Question : 23

Total: 67

A student measured the diameter of a small steel ball using a screw gauge of least count 0.001cm. The main scale reading is 5mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of – 0.004cm, the correct diameter of the ball is

0.521 cm
0.525 cm
0.529 cm
0.053 cm

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