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.

Question

Otto

Chemistry

26 December, 00:46

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.

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Answers (1)

Know the Answer?

Keaton Benitez · Answer 1

B. their frequency stays the same while the wave length decreases.

Explanation:

As the light wave travels from a less dense medium to a denser medium it slows down and this causes refraction. The speed of light is given by wavelength*frequency.

Therefore, when the wavelength decreases, the speed also reduces.