Dual Nature of Radiation and Matter

Question: When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be



1) 0.3 V
2) 0.6 V
3) 1.2 V
4) 2.4 V
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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