MCQ
By photoelectric effect, Einstein, proved
- ✓E = hv
- BK.E. $=\frac{1}{2} \mathrm{mv}^2$
- C$\mathrm{E}=\mathrm{mc}^2$
- D$\mathrm{E}=\frac{\mathrm{Rhc^{2 }}}{\mathrm{n}^2}$
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$A \to B + {\;_2}H{e^4}$
$B \to C + \;2{e^ - }$
Then