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A 5 watt source cmits monochromatic ligh...

A 5 watt source cmits monochromatic light of wavelength `5000 Ã…`. 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

4

B

8

C

16

D

2

Text Solution

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The correct Answer is:
A
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