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in Physics by (24.9k points)
किसी धातु का कार्यफलन `(hc)/(lamda_(0))` हैं । इसके पृष्ठ पर `lamda` तरंगदैर्ध्य का प्रकाश आपतित होता हैं । धातु में से इलेक्ट्रॉन उत्सर्जन के लिए शर्त हैं -
A. `lamdagelamda_(0)`,
B. `lamdage2lamda_(0)`
C. `lamdalelamda_(0)`
D. `lamdale(lamda_(0))/(2)`

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