Find de-Broglie wavelength of neutron at...

Find de-Broglie wavelength of neutron at `127 ^@C`.Given,Boltzmann's constant k=1.38 `xx` `10^(-23)` `J mol^(-1)` `k^(-1)`,h = 6.625 `xx` `10^(-34)` Js and mass of neutron =`1.66 xx 10^-27 kg`.

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