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The de-Broglie wavelength of the tennis ...

The de-Broglie wavelength of the tennis ball of mass 60g moving with a velocity of `10m//s` is approx.: (Plank's constant `h=6.63xx10^(-34)Js`)

A

`1.326xx10^(-28)kg-m//s`

B

`7.54xx10^(-28)kg-m//s`

C

`1.326xx10^(-27)kg-m//s`

D

`7.54xx10^(-27)kg-m//s`

Text Solution

Verified by Experts

The correct Answer is:
C
`1.326xx10^(-27)kg-m//s`
`p =? , lamda=5000Å`
`lamda =(h)/(mv)=h/P`
`therefore p=(h)/(lamda)`
`=(6.03xx10^(-34))/(5xx10^(-7))`
`=1.326xx10^(-27)kg-m//s.`
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