Physics, asked by MohammedThashreef, 4 months ago

find the ratio of the two energy state of a laser ,the transition between which is responsible for the emission of photons of wavelength 687.6nm. assume the ambient temperature as 35 degree Celsius

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Answered by indrajeetchandra80

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Should Canadians be concerned about global patterns of natural vegetation loss? Explain why and give good reasons to support your answer

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