JEE (Advanced) 2016 Paper-2 Question 8

Question 8

Light of wave length $$\lambda_{ph}$$ falls on a cathode plate inside a vacuumtube as shown in the figure. The work function of the cathode surface is $$\phi$$ and the anode is a wire mesh of conducting material kept at a distance d from the cathode. A potential difference V is maintained between the electrodes. If the minimum de Broglie wavelength of the electrons passing through the anode is $$\lambda_{e}$$, which of the following statement(s) is(are) true?



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