घनफळ प्रसरणाचे उच्च गुणांक असलेला पदार्थ ओळखा.

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  1. पितळ 
  2. अल्कोहोल 
  3. काच 
  4. पाणी 

Answer (Detailed Solution Below)

Option 2 : अल्कोहोल 
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स्पष्टीकरण:

घनफळ प्रसरणाचे गुणांक:

  • आसपासचा दाब स्थिर राहून तापमानात प्रति एकक आकाराच्या अंशात्मक बदलाचे हे मोजमाप आहे.
  • हे विशिष्ट वस्तूच्या घनफळावर परिणाम करते.
  • हा गुणांक द्रवपदार्थांवर सर्वाधिक लागू होतो.
  • हे सामान्यतः तापमानावर अवलंबून असते कारण तापमानात त्यानंतरच्या वाढीसह गुणांक वाढतो.
  • लहान तापमान बदलासाठी, ∆T, घनफळातील अंशात्मक बदल, ∆V/V, हे ∆T च्या थेट प्रमाणात आहे.
    • ∆V/V = αv ∆T, जेथे αv हा घनफळ प्रसरणाचा गुणांक आहे.

पदार्थ

αv(10-6 K-1)
 

अल्कोहोल 

1490

काच 

 

27.6

पितळ 

57

पाणी 

210

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