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NASA . Jitron (C) / per second from a mo...

NASA . Jitron (C) / per second from a monochromatic light source of 300 watts and 600 A wavelength. How many photons are emitted? [Planck constant (h) = 6.6x 10-34Js and speed of light (0 = 3x108ms-1] 1-2.

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