TS EAMCET · Physics · Electromagnetic Waves
An electromagnetic wave having frequency \(4 \times 10^{14} \mathrm{~Hz}\) is passing through a small volume. The energy contained in this volume oscillates with frequency
- A \(0 \mathrm{~Hz}\)
- B \(4 \times 10^{14} \mathrm{~Hz}\)
- C \(8 \times 10^{14} \mathrm{~Hz}\)
- D \(2 \times 10^{14} \mathrm{~Hz}\)
Answer & Solution
Correct Answer
(C) \(8 \times 10^{14} \mathrm{~Hz}\)
Step-by-step Solution
Detailed explanation
Frequency of an oscillation of energy with time is twice of frequency of electromagnetic wave. \(\begin{gathered} \therefore f \text { (energy oscillations })=2 \times 4 \times 10^{24} \mathrm{~Hz} \\ =8 \times 10^{24} \mathrm{~Hz} \end{gathered}\)
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