The diameter of a wire measured by a screw gauge of least count 0.001 cm is 0.08 cm . The length measured by a scale of least count 0.1 cm is 150 cm . When a weight of 100 N is applied to the wire, the extension in length is 0.5 cm , measured by a micrometer of least count 0.001 cm . The error in the measured Young's modulus is 
. The value of 
is 
。 (Ignore the contribution of the load to Young's modulus error calculation)
Text Solution
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Since F is known exactly 
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