[" 43.The position of both,an electron and a helium "],[" atom is known within "1.0nm" .Further the "],[" momentum of the electron is known within "],[50times10^(-26)kgms^(-1)" .The minimum uncertainty "],[" in the measurement of the momentum of the "],[" helium atom is "],[" (a) "80kgms^(-1)],[" (b) "50kgms^(-1)],[" (c) "50kgms^(-1)],[" (d) "5.0times10^(-26)kgms^(-1)]