A) \[2.2\times {{10}^{-19}}J\]
B) \[2.0\times {{10}^{-19}}J\]
C) \[4.0\times {{10}^{-20}}J\]
D) \[2.0\times {{10}^{-20}}J\]
Correct Answer: D
Solution :
[d]: Energy absorbed by each molecule \[=4.4\times {{10}^{-19}}J\] Energy required to break the bond \[=4.0\times {{10}^{-19}}J\] Remaining energy gets converted to kinetic energy \[=(4.4\times {{10}^{-19}}-4.0\times {{10}^{-19}})J\] \[=0.4\times {{10}^{-19}}J\]per molecule \[\therefore \]Kinetic energy per atom \[=0.2\times {{10}^{-19}}J\] \[=2\times {{10}^{-20}}J\]You need to login to perform this action.
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