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Physics · PYQ NEET UG 2017
हिन्दीIn an electromagnetic wave in free space the root mean square value of the electric field is \( E_{\text{rms}} = 6\text{ V/m} \). The peak value of the magnetic field is:
Correct answer · Option B
\( 2.83 \times 10^{-8}\text{ T} \)
Explanation
Peak electric field \( E_0 = \sqrt{2} E_{\text{rms}} = \sqrt{2} \times 6 = 6\sqrt{2}\text{ V/m} \). Peak magnetic field \( B_0 = \frac{E_0}{c} = \frac{6\sqrt{2}}{3 \times 10^8} = 2\sqrt{2} \times 10^{-8} \approx 2.83 \times 10^{-8}\text{ T} \).
