When light enters glass (or any other medium) it suffers a change in:
Correct answer: D. Both velocity and wavelength
- A. Wavelength only
- B. Frequency only
- C. Velocity only
- D. Both velocity and wavelength
Explanation
Entering a medium where the light speed reduces (v = c/n), and wavelength shortens (λ = v/f) while frequency remains unchanged, so both v and λ change.
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About Optics
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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