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Q. |
Which one of the following instruments is used to study dispersion of light? |
A. | Microscope |
B. | Telescope |
C. | Spectrometer |
D. | Photometer |
Answer» C. Spectrometer | |
Explanation: Dispersion occurs when different frequencies of light have different phase velocities, due either to material properties (material dispersion) or to the geometry of an optical waveguide (waveguide dispersion). A spectrometer (spectro-photometer, spectrograph or spectroscope) is an instrument used to measure properties alight over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. |
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