1.

The De-broglie wavelength of a tennis ball of mass 66 g moving with the velocity of 10 metre per second is approximately :A. `10^(-35)` metresB. `10^(-33)` metresC. `10^(-31)` metresD. `10^(-36)` metres

Answer» Correct Answer - B
De-broglie wavelength
`lambda=h/(mv)=(6.62xx10^(-34))/(66xx10^(-3)xx10)=10^(-33) M`


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