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Posted by on Sunday, May 1, 2011 at 3:53pm.

A point source of light produces photoelectrons from a photo cell with certain velocity. Which of the following is correct for the photoelectrons if the distance between the photo cell and the source of light is increased?
Choose one answer.
a. Velocity will increase.
b. Velocity will decrease.
c. Velocity will remain the same.
d. Number of photo electrons will increase.

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