A nucleus of mass $M+$$\Delta m$ is at rest and decays into two daughter nuclei of equal mass ${M \over 2}$ each. Speed of light is $c.$ The speed of daughter nuclei is

Question

A nucleus of mass $M+$$\Delta m$ is at rest and decays into two daughter nuclei of equal mass ${M \over 2}$ each. Speed of light is $c.$

The speed of daughter nuclei is

$c{{\Delta m} \over {M + \Delta m}}$

$c\sqrt {{{2\Delta m} \over M}} $

$c\sqrt {{{\Delta m} \over M}} $

$c\sqrt {{{\Delta m} \over {M + \Delta m}}} $

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