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प्रकाश विधुत प्रभाव के एक प्रयोग में प्रकाश आवर्ती की विरुद्ध आतंक वोल्टा का ढलान `4.12xx10^(-15)` V-s प्रप्थ होती हिअ पलंक इस्थिरांक का मान परिकलित कीजिये

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दिया है ग्राफ की आकर्ति `tan theta =4.12xx10^(15)` V-s तथा इलेक्ट्रान का आवेश `(e )=1.6xx10^(19)C`
ग्राफ के ढलान हेतु `tan theta =(V)/(v)`
हम जानते है की hv=eV
`(V)/(v)==(h)/(e )`
`(h)/(e )=4.12xx10^(15)`
`h=1.6xxx10^(-19)xx4.12xx10^(-15)`
`=6.592xx10^(-34)` J-s
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