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  4. The variation of photo-current with collector potential for different frequencies of incident radiation v1, v2 and v3 is as shown in the graph, then

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Q. The variation of photo-current with collector potential for different frequencies of incident radiation $v_1, v_2$ and $v_3$ is as shown in the graph, thenPhysics Question Image

KCETKCET 2016Dual Nature of Radiation and Matter

Solution:

Key Idea The smaller the incident frequency, the smaller the stopping voltage required.
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$\therefore v_3 > v_2 > v_1.$