Light traveling from vacuum enters water, which of the following characteristics of light will remain unchanged?
Correct answer: C. Frequency
- A. Velocity
- B. Amplitude
- C. Frequency
- D. Wavelength
Explanation
Frequency of light remains unchanged when it travels from vacuum to water because frequency is independent of the medium. While velocity and wavelength of light decrease when transitioning from vacuum to water, the amplitude may or may not change. Therefore, the correct answer is Frequency.
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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