Question

How to calculate the frequency Of radio wavelength 30m

Answer 1

Answer- The above question is from the chapter 'Structure of Atom'.

Some basic information:

1. Wavelength (λ) - It is the distance between two consecutive crests or troughs.

2. Frequency (ν) - It is the number of waves passing through a point in one second.

3. Velocity (v) - It is the distance covered by a wave per second.

Velocity of light in vacuum (c) = 3 × 10⁸ m/s

v = λ ν

For electromagnetic radiations,

c = λ ν

Given question: How to calculate the frequency of radio wave of  wavelength 30 m?

Answer: We know that c = λ ν.

c = 3 × 10⁸ m/s

λ = 30 m

Using the formula, c = λ ν

3 × 10⁸ = 30 × ν

ν = 3 × 10⁸ ÷ 30

ν = 1 × 10⁷ Hz

∴ Frequency of radio wave of wavelength 30 m = 1 × 10⁷ Hz.