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Photons absorbed in matter are converted to heat , A source emitting n photons/ sec of frequency γ is used to convert 1kg of ice at 0C to water at 0C . Then , the time taken for the conversion .

decreases with increasing n, with γfixeddecreases with increasing n fixed γincreasingremains constant with n and α changing such nγ=constantincreases when the productnγincreases

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