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JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
Photons of an electromagnetic radiation has an energy \(11\, keV\) each. To which region of electromagnetic spectrum does it belong ?
- A \(X-\) ray region
- B Ultra violet region
- C Infrared region
- D Visible region
Answer & Solution
Correct Answer
(A) \(X-\) ray region
Step-by-step Solution
Detailed explanation
\(E=\frac{h c}{\lambda} \Rightarrow \lambda=\frac{h c}{E}\) \(\Rightarrow \lambda=\frac{6.6 \times 10^{-34} \times 3 \times 10^{8}}{11 \times 1000 \times 1.6 \times 10^{-19}}\) \(=12.4 \,\mathop A\limits^o \)…
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