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er absorbed by the stom in the process Calculate the number of photons emitted per second by 20W di vapour lamp. Assume that of the med energy is converted into light. Wavelength of dium light590 mm he sun Nun is directly overh

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Calculate the number of photons emitted per second by a 10 W sodium vapour lamp. Assume that 60% of the consumed energy is converted into light. Wavelength of sodium light = 590 nm.

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