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The position of both , an electron and a...

The position of both , an electron and a helium atom is known within 1.0 nm. Further the momentum of the electron is known within `5.0xx10^(-26) kgms^(-1)` The minimum uncertainty in the measurement of the momentum of the helium atom is

A

`8.0 xx 10 ^(-26)ms^(-1)`

B

`80kg ms^(-1)`

C

`50 kg ms^(-1)`

D

`5.0 xx 10^(-26)kg ms^(-1)`

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The correct Answer is:
D
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