If the velocity of radio waves is 3 x 105 km/s. The frequency corresponding to wavelength of 300 m is :

Question

If the velocity of radio waves is 3 x 105 km/s. The frequency corresponding to wavelength of 300 m is : (A) 10 MHz (B) 1 kHz (C) 1 MHz (D) 10 kHz

Tardigrade Admin · Accepted Answer

Here: velocity of radio waves =3× 105km text/ sec =3× 108km text/ sec and wavelength λ =300 m frequency f=(velocity of radiowaves/wavelength) =(3× 108/300)=106Hz=1MHz

Q. If the velocity of radio waves is 3 x 105 km/s. The frequency corresponding to wavelength of 300 m is :

10 MHz

1 kHz

1 MHz

10 kHz

Here: velocity of radio waves $= 3 \times 10^{5} km / sec$ $= 3 \times 10^{8} km / sec$ and wavelength $λ = 300 m$ $f re q u e n cy f = \frac{v e l oc i t y o f r a d i o w a v es}{w a v e l e n g t h}$ $= \frac{3 \times 10 ^{8}}{300} = 10^{6} Hz = 1 M Hz$

Q. If the velocity of radio waves is 3 x 105 km/s. The frequency corresponding to wavelength of 300 m is :

10 MHz

1 kHz

1 MHz

10 kHz

Here: velocity of radio waves =3×105km/sec =3×108km/sec and wavelength λ=300m frequencyf=wavelengthvelocityofradiowaves​ =3003×108​=106Hz=1MHz

Here: velocity of radio waves $= 3 \times 10^{5} km / sec$ $= 3 \times 10^{8} km / sec$ and wavelength $λ = 300 m$ $f re q u e n cy f = \frac{v e l oc i t y o f r a d i o w a v es}{w a v e l e n g t h}$ $= \frac{3 \times 10 ^{8}}{300} = 10^{6} Hz = 1 M Hz$