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A student measured the diameter of a wir...

A student measured the diameter of a wire using a screw gauge with least count 0.001 cm and listed the measurements. The correct measurement is

A

5.3200 cm

B

5.3 cm

C

5.32 cm

D

5.320 cm

Text Solution

Verified by Experts

The correct Answer is:
D
The least count (L.C.) of a screw guage is the smallest length which can be measured accurately with it.
As least count is `"0.001 cm"=(1)/(1000)cm`
Hence measured value should be recorded upto 3 decimal places i.e., 5.320 cm
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DISHA PUBLICATION-PHYSICAL WORLD, UNITS AND MEASUREMENTS-Exercise - 1 : Concept Builder (Topicwise)(Topic 2 : Errors in Measurements and Significant Figures)
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