Physics · Dual Nature of Radiation and Matter
एक प्रकाश-संवेदी धातु की सतह के लिए कार्य फलन (work function) 3.315 eV है। इस सतह से इलेक्ट्रॉनों के प्रकाश-उत्सर्जन (photoemission) के लिए देहली (cut-off) तरंगदैर्घ्य लगभग कितनी होगी?
- 1500 nm
- 2375 nm✓
- 3200 nm
- 4150 nm
सही उत्तर देखें
375 nm
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