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If no radiation is falling on plate C, the number of electrons appeared on the surface of cathode C when jockey is connected at end P of the rheostat is

$\begin {array} {1 1} (a)\;8.85 \times 10^6 & \quad (b)\;8.85 \times 10^9 \\ (c)\;1.77 \times 10^{10} & \quad (d)\;0 \end {array}$

 

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Ans : (d)
There will be no emission of photoelectrons if no light of
suitable frequency falls on photosensitive surface.

 

answered Dec 30, 2013 by thanvigandhi_1
edited Mar 13, 2014 by thanvigandhi_1
 

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