Question 551: Atoms & Nuclei

Question

A radioactive nucleus of mass M emits a photon of frequency $$v$$ and the nucleus recoils. The recoil energy will be

Accepted Answer

Momentum Mu = $${E \over c} = {{hv} \over c}$$
Recoil energy :
$${1 \over 2}M{u^2}$$ = $${1 \over 2}{{{M^2}{u^2}} \over M}$$
= $${1 \over {2M}}{\left( {{{hv} \over c}} ight)^2}$$
= $${{{h^2}{
u ^2}} \over {2Mc}}$$

Answer

Mc
2
$$-$$ h$$v$$

Answer

h
2
$$\upsilon $$
2
/2Mc
2

Answer

zero

Answer

h$$v$$

Atoms & Nuclei

A radioactive nucleus of mass M emits a photon of frequency $v$ and the nucleus recoils. The recoil energy will be

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