Which of the following statements is factually correct ?
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Answer: D. All of these
Explanation
Refractive index varies as a function of radiation wavelength, causing different colors to bend by varying amounts. Dispersion describes the physical phenomenon where refractive index changes with the wavelength of light. Prisms split white light into constituent colors because each wavelength experiences a different refraction angle. Isaac Newton demonstrated that white light is composed of multiple spectral colors separable by prismatic dispersion. Cauchy equations mathematically approximate the wavelength-dependent refractive index of transparent optical materials. Chromatic aberration in camera lenses occurs due to dispersion effects across different visible light wavelengths.
Optical lens designers must correct chromatic aberration using multi-element glass configurations with varying dispersion. Spectrometers use prisms or diffraction gratings to separate incoming radiation into detailed wavelength bands. Atmospheric dispersion affects astronomical observations by shifting apparent stellar positions across different colors. Option A is true but represents only one component of the comprehensive dispersion phenomena described here. Option B correctly defines dispersion but omits its practical demonstration through prismatic light splitting. Option C explains prism splitting accurately but ignores the underlying definition of refractive index variation.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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