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Question
Photons of an electromagnetic radiation has an energy 11 keV each. To which region of electromagnetic spectrum does it belong?
Options
X-ray region
Ultra violet region
Infrared region
Visible region
MCQ
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Solution
X-ray region
Explanation:
E = `"hc"/lambda`
⇒ λ = `"hc"/"E"`
⇒ λ = `(6.6xx10^-34xx3xx10^8)/(11xx1000xx1.6xx10^-19)`
= 12.4 Å
Which belongs to X-ray region.
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