The ratio of de Broglie wavelength of a deutron with kinetic energy 
to that of an alpha particle with kinetic energy 
, is 
. The value of 
is 
.
(Assume mass of proton 
mass of neutron):
Text Solution
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(2)
The de Broglie wavelength is 
.
For a deuteron (mass 
) with energy 
: 
For an alpha particle (mass 
) with energy 
: 
The ratio: 
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