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A small metal plate (work function = 1.17 eV) is placed at a distance of 2 m from a monochromatic light source of wavelength 4.8 × 10'7 m and power 1.0 watt. This light falls normally on the plate. The number of photons striking the metal plate per second per unit area will be

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A small metal plate (work function = 1.17 eV) is placed at a distance of 2 m from a monochromatic light source of wavelength 4.8 × 10'7 m and power 1.0 watt. This light falls normally on the plate. The number of photons striking the metal plate per second per unit area will be






 
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