Question

Radiation with frequency of a 1.85 MHz, falls in the radio wave region. What is the wavelength (in nm) of the electromagnetic radio?

Answer 1

λ = 1.62×10¹¹ nm

Step-by-step explanation:

Wavelength of radiation = ?

Frequency of radiation = 1.85 MHz (1.85 ×10⁶ Hz)

Solution:

Formula:

Speed of radiation = frequency × wavelength

c = speed of wave = 3×10⁸ m/s

by putting values,

3×10⁸ m/s = 1.85 ×10⁶ Hz × λ

λ = 3×10⁸ m/s / 1.85 ×10⁶ s⁻¹

λ = 1.62×10² m

In nm:

1 m = 10⁺⁹ nm

λ = 1.62×10¹¹ nm