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The lengths of two rods measured by a me...

The lengths of two rods measured by a meter scale are 50.0 cm and 10.0 cm, respectively. The least count of meter scale is 1 mm. Which measurement between two will be more correct?

A

First measurement

B

Second measurement

C

Both measurement will be same

D

The given question is not exact

Text Solution

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The correct Answer is:
A
The minimum possible error in the measurement from meter scale is 1 mm. Hence, maximum possible error in first measurement `= (0.1)/( 50.0) xx 100 = 0.2 %`
Maximum possible error in second measurement `= (0.1)/( 100) xx 100 = 1%`
Hence, first measurement is more correct.
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