what is the unit of power in light chapter
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The unit of power is WATT which is denoted by W
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Quantum Theory. Q is the photon energy (joules), h is Planck's constant (6.623 x 10-34 J s), c is the speed of light (2.998 x 108 m s-1), and λ is the wavelength of radiation (meters). All light measurement units are spectral, spatial, or temporal distributions of optical energy.
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