A 5 W source emits monochromatic light of wavelength 5000Å. When placed 0.5m away

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A 5 W source emits monochromatic light of wavelength 5000Å. When placed 0.5m away , it liberates photoelectrons from a photosensitive metallic surface . When the source is moved to a distance of 1.0 m the number of photoelectrons liberated will be reduced by a factor of
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A 5 W source emits monochromatic light of wavelength 5000Å. When placed 0.5m away , it liberates photoelectrons from a photosensitive metallic surface . When the source is moved to a distance of 1.0 m the number of photoelectrons liberated will be reduced by a factor of A 5 W source emits monochromatic light of [...]
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Tags: A 5 W source emits monochromatic light of wavelength 5000Å. When placed 0.5m away , it liberates photoelectrons from a photosensitive metallic surface . When the source is moved to a distance of 1.0 m the number of photoelectrons liberated will be reduced by a factor of ,