A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, c=3.0×10^8 ms^-1]

1. 219.3 m

2. 219.2 m

3. 2192 m

4. 21.92 cm

Doubtly Asked 30 Oct 2026 NEET UG 2021 Practice test neet Save WhatsApp Report

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Answer: 1. 219.3 m

Key idea: \(\lambda=c/\nu\).

\(\nu=1368\ \mathrm{kHz}=1.368\times10^6\ \mathrm{s^{-1}}\)

\(\lambda=\dfrac{3.0\times10^8}{1.368\times10^6}=219.3\ \mathrm{m}\).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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