Q 12-08-135JEE MainJEE Main 2022 (26 Jul, Shift 1)Easy
A radio can tune to any station in the $6\ \text{MHz}$ to $10\ \text{MHz}$ band. The value of the corresponding wavelength bandwidth will be
Answer: (B) $20\ \text{m}$
$\lambda_1 = \dfrac{3\times10^8}{6\times10^6} = 50\ \text{m}$ and $\lambda_2 = \dfrac{3\times10^8}{10^7} = 30\ \text{m}$. Bandwidth $= 20\ \text{m}$.
Solution by Sreeraj P, M.Sc Physics