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Q. In a Laser (say neon laser) all the atoms emit the light waves of
In a Laser all the atoms emit the light waves of same frequency, amplitude and phase. A laser is a device that emits light (electromagnetic radiation) through a process of optical amplification based on the stimulated emission of photons. The term “laser” originated as an acronym for Light Amplification by Stimulated Emission of Radiation.
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Q. A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an
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Q. Which of the following pairs have the same SI units?
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Q. The heat energy traveling in the form of short_____radiation?
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