A 5 watt source emits monochromatic light of wavelength\[\text{5000 }\ – McqOptions

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1.	A 5 watt source emits monochromatic light of wavelength\[\text{5000 }\overset{\text{o}}{\mathop{\text{A}}}\,\]. 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
A.	8
B.	16
C.	2
D.	4
Answer» E.

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