MCQ
The wavelength of $X-$rays is
- A$2000 \mathring A$
- ✓$2 \mathring A$
- C$1 \mathrm{~mm}$
- D$1 \mathrm{~cm}$
✓
Answer
Correct option: B.
$2 \mathring A$
$2 \mathring A$
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