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in Physics by (25.0k points)
प्रकाशवैधुत प्रभाव के एक प्रयोग में धातु के उत्सर्जक पृष्ठ पर ` 0.62 mu` की तरंगदैर्घ्य के प्रकाश के आपतित होने पर निरोधी विभव 1.0 V है । धातु का कार्य फलन ( लगभग ) है :
A. 1 eV
B. 2 eV
C. 1.5 eV
D. 0.5 eV

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