Question

if it is correct i will mark as brainlist or i will report​

Answer 1

Answer:

In one rotation, the scale moves 0.5mm. Hence in two rotations, 0.5×2=1mm.

Reading on circular scale is

50

0.5

×20=0.2mm.

Now, error is −

50

0.5

×30=−0.3.

Hence, correct reading is 1+0.2−0.3=0.9mm

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