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in Physics by (25.0k points)
किसी कैथोड पृष्ठ का कार्य फलन 3.3 eV है । इस पृष्ठ से प्रकाश - इलेक्ट्रॉनों के उत्सर्जन के लिए आपतित प्रकाश की न्यूनतम आवृत्ति होगी :
A. `6.6xx10^(-34) Hz`
B. `0.5xx10^(-34)Hz`
C. `8xx10^(14)Hz`
D. `3.2xx10^(15)Hz`

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