1.

A particle of mass3 xx 10^(-6)g has the same wavelength as an electron moving with a velocity 6 xx 10^(6) ms^(-1). The velocity of the particle is

Answer»

`1.82xx10^(-18)m//s`
`1.82xx10^(-18)m//s`
`9xx10^(-2)m//s`
`3xx10^(-31)m//s`

Solution :de-Broglie WAVELENGTH of ELECTRON
`lambda=h/(MV)=(6.63xx10^(-34))/(9.1xx10^(-31)xx6xx10^(6))=1.214xx10^(-10)m`
Velocity of the PARTICLE
`v=h/(mlambda)=(6.63xx10^(-34))/(3xx10^(9)xx1.214xx10^(-10))=1.820xx10^(-15)ms^(-1)`


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