1.

A proton and electron are lying in a box having unpenetrable walls,the ratio of uncertainty in their velociteis are ………..[m_(e)=mass of electron and m_(p)=mass of proton.]

Answer»

`(m_(2))/(m_(p))`
`m_(E).m_(p)`
`sqrt(m_(e).m_(p))`
`sqrt((m_(e))/(m_(p)))`

Solution :ACCORDING to heisenberg.s uncertainty PRINCIPLE
`Deltax.Deltap=(h)/(2pi)=h`
`therefore Deltax.Delta(MV)=h`
`thereforex.mDeltav=h`
`therefore v=(h)/(mDeltax)`
`therefore Deltav prop (1)/(m)therefore (Deltav_(p))/(Deltav_(e))=(m_(e))/(m_(p))`


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