Red light is used in photographic dark rooms because of:
Correct answer: C. Less frequency, more wavelength
- A. More frequency, less wavelength
- B. Less frequency, less wavelength
- C. Less frequency, more wavelength
- D. More frequency, more wavelength
Explanation
In the spectrum of visible light, VIBGYOR, moving towards the right the wavelength increases and frequency decreases as the the two are inversely proportional.So red light has a high wavelength and low frequency.
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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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