Question

The wavelength of radio active wave is 0.1m . Then what is it's frequency

Answer 1

we know,

wavelength = speed × frequency.

Hence,

frequency = wavelength /speed = 3 × 10^8/10^-1

= 3 × 10^9 Answer

Regards

Kshitij

Answer 2

Radio wave are electromagnetic waves and hence they travel with the speed of light.

v=3×108㎧λ(given)=1m

A we know

v=fλ∴f=λv=13×108∴f=3×108Hz