A laser light radiation is being studied in a spectrometer. The spectrum produced by the LASER will be:

Line spectrum of a single colour is obtained

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A band spectrum with many different sets of wavelengths depending on the power of source

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Continuous spectrum of white light

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Different colored patches are observed

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Solution

The correct option is A Line spectrum of a single colour is obtained
LASER is an acronym for Light Amplification by Stimulated Emission of Radiation. A laser light is a monochromatic light which has a single wavelength. When laser radiation is studied, they show a line spectrum of single wavelength.

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Nitrogen laser produces a radiation at a wavelength of 337.1 nm. If the number of photons emitted is 5.6 × 10²⁴, calculate the power of this laser.

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