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  • If a source of electromagnetic radiation having power produces <img alt="\mathrm{10^{16}}"

If a source of electromagnetic radiation having power \mathrm{15 kW} produces \mathrm{10^{16}} photons per second, the radiation belongs to a part of spectrum is.
(Take Planck constant \mathrm{h = 6 \times 10^{-34}Js} )

Option: 1

Micro waves


Option: 2

Ultraviolet rays


Option: 3

Gamma rays


Option: 4

Radio waves


Answers (1)

best_answer

\begin{aligned} & \mathrm{P}=\frac{N}{t}\left(\frac{h c}{\lambda}\right) \\ & 15 \times 10^3=10^{16} \times \frac{6 \times 10^{-34} \times 3 \times 10^8}{\lambda} \\ & \lambda=1.2 \times 10^{-13} \mathrm{~m} \\ & \lambda=0.0012 \mathrm{~A}^0 \end{aligned}
Corresponds to Gamma rays

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mansi

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