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A student determined Young's Modulus of ...

A student determined Young's Modulus of elasticity using the formula `Y = (MgL^3)/(4bd^3delta)`. The value of g is taken to be `9.8 m//s^2`, without any significant error, his observation are as following.

Then the fractional error in the measurement of Y is :

A

0.0155

B

0.0083

C

0.083

D

0.155

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