Red light is used in photographic dark room because of:
Correct answer: C. Less frequency, more wavelenght
- A. More frequency, less wavelength
- B. Less frequency, less wavelenght
- C. Less frequency, more wavelenght
- D. More frequency, more wavelength
Explanation
A fact that red light has a greater wavelength while wavelength and frequency are inversely proportional to each other hence, red light has a lesser frequency compared to other colors in the visible spectrum, making it suitable for use in a photographic darkroom.
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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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