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in Physics by (25.0k points)
`20.0` सेमि लम्बी तथा `4 ।0 ` सेमि व्यास वाली ताँबे की छड़ के ऊष्मीय प्रतिरोध का परिकलन किजय।ताँबे का ऊष्मा-चालकता-गुणांक `9।2xx10^(-2)`किलोकेलोरी/(मीटर-सेकण्ड -`^(@)C`) है।ऊष्मा -स्थानांतरण की दर ज्ञात कीजिए जबकि छड़ के दोनों सिरों का तापांतर `50^(@)C` हो।

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1 Answer

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by (25.2k points)
Correct Answer - `1.7 xx 10^(3)` (सेकण्ड `""^(@)C` )/(किलोकैलोर,`0.0289`किलोकेलोरी/सेकण्ड।

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