A ball of mass 0.12 kg is moving with a ...

A ball of mass `0.12 kg` is moving with a speed `20 m//s`. Calculate the de Broglie wavelength. (planck constant `h= 6.62xx10^(-34)J.s`)

A

`3.5xx10^(-34) m`

B

`2.8xx10^(-34) m`

C

`1.2xx10^(-34) m`

D

`2.1xx10^(-34) m`

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The correct Answer is:

B

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