InterviewSolution
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InterviewSolution
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Electromagnetic radiation has an energy of 15 keV. Then this radiation belongs to which region of electromagnetic waves?(a) X rays(b) Infrared rays(c) Gamma rays(d) UV raysI had been asked this question during an online interview.Enquiry is from Electromagnetic Spectrum topic in division Electromagnetic Waves of Physics – Class 12 |
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Answer» CORRECT choice is (a) X rays Easiest explanation: GIVEN: Energy (E) = 15 keV The required equation ➔ λ(in Å)=\( \frac {hc}{E(in \, eV)}\) λ=\(\frac {12400}{15 \times 10^3}\) λ=0.826 Å=0.826 × 10^-10m X rays COVER wavelengths ranging from above 10^-8 m to 10^-13 m. Therefore, this electromagnetic radiation BELONGS to the REGION of X rays. |
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