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A small plate is placed at a small distance of 2m from a monochromatic light source of wavelength 4.8*10^-7 m and power 1 watt.The light falls normally on the normal plate .Find the no.of photons striking the no.pkate per square metre per second.

A small plate is placed at a small distance of 2m from a monochromatic light source of wavelength 4.8*10^-7 m and power 1 watt.The light falls normally on the normal plate .Find the no.of photons striking the no.pkate per square metre per second.

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