Which of the following practical units of len | vedclass

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(D) The correct value for $1$ light year is the distance light travels in one year,which is approximately $9.46 	imes 10^{15} \, m$.Option $A$ is cor

Vedclass · Accepted Answer

$1$ light year $= 9.46 	imes 10^{12} \, m$

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(D) The correct value for $1$ light year is the distance light travels in one year,which is approximately $9.46 	imes 10^{15} \, m$.Option $A$ is correct: $1$ fermi $= 10^{-15} \, m$.Option $B$ is correct: $1$ astronomical unit $(AU)$ $= 1.496 	imes 10^{11} \, m$.Option $C$ is correct: $1$ parsec $\approx 3.26$ light years.Option $D$ is incorrect because $1$ light year $= 9.46 	imes 10^{15} \, m$,not $9.46 	imes 10^{12} \, m$.

Which of the following practical units of length is not correct?

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