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Question
When monochromatic light passes from a vacuum to a material medium and vice versa, which of the following characteristics of the light beam does not change?
Options
Velocity
Intensity
Wavelength
Frequency
MCQ
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Solution
Frequency
Explanation:
The characteristic of monochromatic light that does not change when it passes from a vacuum to a material medium and vice versa is the frequency. Frequency remains constant because it is determined by the source of light and does not depend on the medium. However, velocity and wavelength change due to the medium's refractive index, and intensity can change due to reflection or absorption.
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