Modern Physics Ques 214

  1. In the options given below, let $E$ denote the rest mass energy of a nucleus and $n$ a neutron. The correct option is

(2007, 3M)

(a) $E\left({ } _{92}^{236} U\right)>E\left({ } _{53}^{137} I\right)+E\left({ } _{39}^{97} Y\right)+2 E(n)$

(b) $E\left({ } _{92}^{236} U\right)<E\left({ } _{53}^{137} I\right)+E\left({ } _{39}^{97} Y\right)+2 E(n)$

(c) $E\left({ } _{92}^{236} U\right)<E\left({ } _{56}^{140} Ba\right)+E\left({ } _{36}^{94} Kr\right)+2 E(n)$

(d) $E\left({ } _{92}^{235} U\right)<E\left({ } _{56}^{140} Ba\right)+E\left({ } _{36}^{94} Kr\right)+E(n)$

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Answer:

Correct Answer: 214.(a)

Solution:

Formula:

Alpha - Decay Process:

  1. Rest mass of parent nucleus should be greater than the rest mass of daughter nuclei. Therefore, option (a) will be correct.


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