MCQ
The minimum wavelength of photon is $5000 \mathring A$, its energy will be
- ✓$2.5 \mathrm{eV}$
- B$50 \mathrm{~V}$
- C$5.48 \mathrm{eV}$
- D$7.48 \mathrm{eV}$
✓
Answer
Correct option: A.
$2.5 \mathrm{eV}$
$E=\frac{12375}{\lambda}=\frac{12375}{5000}=2.47 \mathrm{eV} \approx 2.5 \mathrm{eV}$
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