In a Fast Rotating Atomic Nucleus the Rate of Rotation $\times$

Multiple Choice

In a fast rotating atomic nucleus the rate of rotation is related to the energy of the emitted gamma-ray according to the relationship "E_gamma = 2hf," where h = Planck's constant,and f = rotational frequency.Find the period of rotation that corresponds to an energy of 0.75 MeV.

A) 1.2 $\times$ 10^-14 s
B) 2.4 $\times$ 10^-20 s
C) 8.5 $\times$ 10¹⁹ s
D) 1.7 $\times$ 10²⁰ s
E) 1.2 $\times$ 10^-20 s