Answer:
Step-by-step explanation:
Given : Lightwaves travel from the air into a lens made of glass. Their velocity decreases as they enter the glass.
To Find : How does this affect the frequency and wavelength of the lightwaves
Solution:
Change in velocity does not affect the frequency of light .
So, frequency will remain same
Wavelength is the "sacrificial quantity" that adjusts to adapt to change in speed.
If it were frequency that changed, it would mean big problems for causality and conservation of energy.
Formula: c = v λ
Where c is the velocity
v = frequency
λ = wavelength
Thus the wavelength of light waves decrease as velocity decrease as they are directly proportional.
