JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
If a source of electromagnetic radiation having power \(15 kW\) produces \(10^{16}\) photons per second, the radiation belongs to a part of spectrum is.(Take Planck constant \(h =6 \times 10^{-34}\,Js\) )
- A Micro waves
- B Ultraviolet rays
- C Gamma rays
- D Radio waves
Answer & Solution
Correct Answer
(C) Gamma rays
Step-by-step Solution
Detailed explanation
Energy of one photon \(=\frac{\text { Power }}{\text { Photon frequency }}\) \(E=h \nu=\frac{15 \times 10^3}{10^{16}}\) \(v=\frac{15 \times 10^{-13}}{6 \times 10^{-34}}=2.5 \times 10^{21}\)
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