MCQ
The velocity of X-rays having wavelength 1 Å will be :
- ✓$3.0 \times 10^{8} m \, s^{-1}$
- B$3.0 \times 10^{10} m \, s^{-1}$
- C$3.0 \times 10^{11} m \, s^{-1}$
- D$3.0 \times 10^{12} m \, s^{-1}$
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