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103. A 5 watt source emits monochromatic light of wavelength 5000A^° .when placed 0.5 m 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 1) 8 2) 16 3) 2 4) 4

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99996114344-0-0

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