A radio can tune to any station in 7.5 MHz to 12 MHz band. The corresponding wavelength band is

Question

A radio can tune to any station in 7.5 MHz to 12 MHz band. The corresponding wavelength band is (A) 40 m to 25 m (B) 30 m to 25 m (C) 25 m to 10 m (D) 10 m to 5 m

Tardigrade Admin · Accepted Answer

Here, upsilon1 = 7.5 MHz, upsilon2 = 12 MHz ∴ λ1 = (c/ upsilon1) = (3 × 108/7.5 × 106) = 40 m and λ 2 = (c/ upsilon 2) = (3 × 108/12× 106) = 25 m

Q. A radio can tune to any station in $7.5 M Hz$ to $12 M Hz$ band. The corresponding wavelength band is

40 m to 25 m

30 m to 25 m

25 m to 10 m

10 m to 5 m

Here, $υ_{1} = 7.5 M Hz$ , $υ_{2} = 12 M Hz$
$∴ λ_{1} = \frac{c}{υ _{1}} = \frac{3 \times 1 0 ^{8}}{7.5 \times 1 0 ^{6}} = 40 m$
and $λ_{2} = \frac{c}{υ _{2}} = \frac{3 \times 1 0 ^{8}}{12 \times 1 0 ^{6}} = 25 m$

Q. A radio can tune to any station in 7.5MHz to 12MHz band. The corresponding wavelength band is