Question

Binding energy curve shows the variation of Binding energy per nucleon of nuclei with mass number.

1. Binding energy per nucleon is maximum for mass number…….

2. The figure shows dis integration of Deuteron.

What should be the frequency of the incident photon to break Deuteron into proton and neutron?

Mass of proton m_p = 1,007276u.

Mass of neutron m_n = 1,008665u

Mass of deuteron = 2.013553u

Answer 1

1.  56

2. Mass defect = (1.007276 + 1.008665) – 2.013553 = 0.002388u

Binding Energy = 0.002388 × 931 MeV = 2.223 MeV

Energy supplied to the photon

= 2.223 × 10⁶ × 1.6 × 10^-19

= 3.56 × 10^-13J

Frequency of photon

v = \(\frac{E}{h}=\frac{3.56\times10^{-13}}{6.62\times10^{34}}\) = 5.4 x 10²⁰Hz