_ gives the definition of meter in terms of the wavelength of red cadmium light.
Correct answer: C. Michelson
- A. Newton
- B. Einstein
- C. Michelson
- D. Galileo
Explanation
Explanation: Albert A. Michelson is credited with proposing the idea of defining the meter in terms of the wavelength of red cadmium light. This proposal eventually led to the international definition of the meter based on the speed of light and the wavelength of a specific spectral line.
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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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