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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`3xx10^6 ms^-1`. The velocity of the particle is:(Mass of electron=`9.1 xx 10^-31`kg)

A

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

B

`9 xx 10^-2 ms^-1`

C

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

D

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

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