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Wavelength Calculator

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

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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