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किसी धातु के लिये प्रकाशवैधुत कार्य फलन 3.30 इलेक्ट्रॉन - वोल्ट है । इसके पृष्ठ पर `1.2xx10^(15)` हर्ट्स आवृत्ति का प्रकाश डालने पर उत्सर्जित प्रकाश -

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किसी धातु के लिये प्रकाशवैधुत कार्य फलन 3.30 इलेक्ट्रॉन - वोल्ट है । इसके पृष्ठ पर `1.2xx10^(15)` हर्ट्स आवृत्ति का प्रकाश डालने पर उत्सर्जित प्रकाश -इलेक्ट्रॉनों की अधिकतम गतिज ऊर्जा कितनी होगी ?
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