A tritium gas target is bombareled with a beam of mono-energetic protons of K.E 3MeV . What is K.E of neutrons emitted at an angle $\;30^{0}\;$ with incident beam ? Atomic masses are $\;H^{1}=1.007276 amu$ $\;m^{1}=1.008665 amu$ $\;H_{1}^{3}=3.06056 amu$ and $\;He^{2}=3.016030 amu$

Question

$(a)\;1.44 MeV\qquad(b)\;2.36 MeV\qquad(c)\;1.92 MeV\qquad(d)\;2.6 MeV$