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+1 vote
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in Physics by (78.6k points)

किसी धातु की देहली आवृत्ति 3.3 x 1014 Hz है। यदि 8.2 x 1014 Hz आवृत्ति का प्रकाश धातु पर आपतित हो तो प्रकाश-विद्युत उत्सर्जन के लिए अन्तक वोल्टता ज्ञात कीजिए।

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Best answer

आइन्सटीन का प्रकाश-वैद्युत समीकरण है। 

hν = hν0 + Ek 

यदि अन्तक वोल्टता V% हो, तो Ek = eV0 

∴ hv = hv0 +eV0 

⇒ eV0 = h(ν – ν0

= 6.63 x 10-34 (8.2 x 1014 – 3.3 x 1014)

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