6CO^2 + 6H2O—->sunlight C6H12O6+6O2
Do you need like a full paragraph or can i just give like one sentence?
Given that,
The speed of a wave, v = 200 m/s
Wavelength, 
We need to find the frequency of this wave. The relation between wavelength, frequency and the speed is given by :

So, the frequency of this wave is 100 Hz.