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A light source emit monochromatic lightof 5000 Å wavelength and produce 5 W power .When it is displaced by 0.5 m from photo sensitive surface photoelectron are emitted,when distance increased by 0.5, no.of photoelectron liberated will become …… |
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Answer» 8 `N_(E)prop "INTENSITY"prop (1)/(("distance ")^(2))` `therefore` When distance become DOUBLE `N_(E)` will decrease `(1)/(4)` times. |
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