select the correct answer. lightwaves travel from the air into a lens made of glass. their velocity…

select the correct answer. lightwaves travel from the air into a lens made of glass. their velocity decreases as they enter the glass. how does this affect the frequency and wavelength of the lightwaves? a. their frequency stays the same and their wavelength increases. b. their frequency stays the same and their wavelength decreases. c. their frequency increases and their wavelength decreases. d. their frequency decreases and their wavelength increases.

select the correct answer. lightwaves travel from the air into a lens made of glass. their velocity decreases as they enter the glass. how does this affect the frequency and wavelength of the lightwaves? a. their frequency stays the same and their wavelength increases. b. their frequency stays the same and their wavelength decreases. c. their frequency increases and their wavelength decreases. d. their frequency decreases and their wavelength increases.

Answer

Explanation:

Step1: Recall wave - property relationship

The relationship between the speed ($v$), frequency ($f$), and wavelength ($\lambda$) of a wave is given by $v = f\lambda$.

Step2: Understand frequency property

The frequency of a light - wave is determined by its source and does not change when the light travels from one medium to another. So, when light travels from air to glass, the frequency $f$ remains constant.

Step3: Analyze wavelength change

Since $v = f\lambda$ and $f$ is constant, and the speed $v$ of light decreases when it enters glass from air. To satisfy the equation $v = f\lambda$, the wavelength $\lambda$ must decrease as $v$ decreases and $f$ is fixed.

Answer:

B. Their frequency stays the same and their wavelength decreases.