MCQ
The $K.E.$ of an electron is $4.55 \times 10^{-25} \,J$ Calculate its $\lambda$.
- A$1.944 \times 10^{-7}\,m$
- B$19.44 \times 10^{-7}\,m$
- C$97.2 \times 10^{-8}\,m$
- ✓$97.2 \times 10^{-7}\,m$
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