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JEE MAIN - Physics (2006 - No. 4)

The anode voltage of a photocell is kept fixed. The wavelength $$\lambda $$ of the light falling on the cathode is gradually changed. The plate current $${\rm I}$$ of the photocell varies as follows
AIEEE 2006 Physics - Dual Nature of Radiation Question 169 English Option 1
AIEEE 2006 Physics - Dual Nature of Radiation Question 169 English Option 2
AIEEE 2006 Physics - Dual Nature of Radiation Question 169 English Option 3
AIEEE 2006 Physics - Dual Nature of Radiation Question 169 English Option 4

Explication

As $$\lambda $$ decreases, $$v$$ increases and hence the speed of photo electron increases. The chances of photo electron to meet the anode increases and hence photo electric current increases.

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