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Determination of Significant Digits in a Number

The diameter ...

Question

The diameter of a sphere is measured with an instrument having least count $0.001$ cm. The diameter is $1.933$ cm. The radius to correct significant figures will be :

A

0.9665 cm

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B

0.966 cm

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C

0.967 cm

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D

none of these

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Solution

The correct option is A 0.966 cm
Radius $= \frac{1.933}{2} = 0.9665 = 0.966 c m$

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