Question
Download Solution PDFनिम्नलिखित में से किस पदार्थ में प्रसार का लगभग शून्य गुणांक है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFव्याख्या:
विस्तार का गुणांक:
- जब सामग्री को 1 °C तक गर्म किया जाता है तो सामग्री के विस्तार का गुणांक संख्यात्मक रूप से लंबाई, क्षेत्रफल या आयतन में वृद्धि के अनुपात के बराबर होता है।
इकाई - °C-1 या K-1
|
सामग्री |
तापीय विस्तार का गुणांक (10-6 m/m°C-1) |
|
इन्वार |
1.5 (≈ 0) |
|
जंगरोधी इस्पात |
10-17 |
|
चांदी |
19-20 |
|
सेलेनियम |
37 |
महत्वपूर्ण बिंदु
- इन्वार- यह निकल (36%) और आयरन (64%) का मिश्र धातु है।
Last updated on Jun 16, 2025
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