Wavelength Calculator

To use wavelength calculator, select the term you want to calculate, enter the known values, and click calculate button

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Wavelength Calculator

Wavelength calculator is used to calculate the wavelength (λ) of a wave based on its frequency (f) and velocity (v). 

What is Wavelength?

Distance between two consecutive crests (or troughs) of a wave is called Wavelength. 

wavelength
It is denoted by the Greek letter λ (lambda). 

Formula of Wavelength:

λ = v / f

where, 

  • λ is the wavelength, 
  • v is the velocity of the wave, 
  • f is the frequency of the wave.

Examples Of Wavelength

Example 1:

Calculate the wavelength of light in water having a wave frequency of 12 Hz and wave velocity of 220m/s.

Solution

Step 1: Take the given data.

Wave frequency = 12 Hz

Wave velocity = 220m/s

Step 2: Take the general formula of wavelength and substitute the values of frequency and velocity.

λ = v / f

λ = 220 / 12

λ = 55/3

λ = 18.33w

Example 2:

Calculate the wave velocity of light in glass having a wave frequency of 16 Hz and wavelength of 10w.

Solution

Step 1: Take the given data.

Wave frequency = 16 Hz

Wave length = 10w

Step 2: Take the general formula of wavelength, rearrange it, and substitute the values of frequency and wavelength to it.

λ = v / f

λ * f = v

v = 10 x 16

v = 160m/s

Wavelength of Different Colors:

ColorWavelength (nm)Frequency (10^14 Hz)Energy (eV)
Red620-7504.00-3.991.99-1.65
Orange590-6205.08-4.842.10-2.00
Yellow570-5905.26-5.082.17-2.10
Green495-5706.06-5.262.51-2.17
Blue450-4956.67-6.062.75-2.51
Violet380-4507.89-6.673.26-2.75
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