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The external and internal diameters of a...

The external and internal diameters of a hollow cylinder are determined with vernier callipers and the results are recorded as `4.23 pm0.01` cm and `3.89pm0.01` cm. The thickness of the cylinder wall within the limits of error is

A

`0.34 pm 0.01` cm

B

`0.34pm 0.02` cm

C

`0.34 pm 0.04` cm

D

`0.17 pm 0.01 ` cm

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The correct Answer is:
D
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AAKASH SERIES-UNITS AND MEASUREMENTS-EXERCISE -3
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