1.

A nucleus of mass M is initially at rest.It absorb neutron having m_(N) rest mass compound nucleus divided in two nucleus of m_(1) and 5 m_(1).If wavelength of nucleus with mass m_(1) is lambda,then wavelength of other nucleus will be…..

Answer»

`25 lambda`
`5 lambda`
`(lambda)/(5)`
`lambda`

SOLUTION :From LAW of CONSERVATION of linear momentum ,
`THEREFORE vecp_(1)+vecp_(2)=0 therefore vecp_(1)=-vecp_(2)`
`therefore` Taking only MAGNITUDE `p_(1)=p_(2)`
Taking `lambda_(1)=lambda`
`therefore (h)/(lambda_(1))=(h)/(lambda_(2))`
`therefore lambda_(2)=lambda_(1)`
`therefore lambda_(2)=lambda`


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