Looking for classes? Ksquare Career Institute, Bengaluru →
The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong?
A
$\gamma$-rays
B
X-rays
C
Infra-red rays
D
Ultraviolet rays
Detailed Solution
$\lambda = \frac{hc}{E} = \frac{12400\ \text{eV Å}}{15000\ \text{eV}} \approx 0.826$ Å
Since $\lambda < 100$ Å, the radiation is X-rays.
Since $\lambda < 100$ Å, the radiation is X-rays.