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A particle of mass 1 mg has the same wav...

A particle of mass `1 mg` has the same wavelength as an electron moving with a velocity of `3 xx 10^(6) ms^(-1)`. The velocity of the particle is

A

`2.7 xx 10^(-18) ms^(-1)`

B

`9xx10^(-2) ms^(-1)`

C

`3 xx 10^(-31) ms^(-1)`

D

`2.7 xx 10^(-21) ms^(-1)`

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