Practice question

MCQ

Question

Which of the following is true about the coefficient of volume expansion compared to the coefficient of linear expansion?

Options

Choose one · Correct answer highlighted

They are equal αv\=2αl αv\=3αl Correct αl\=3αv

Explanation

The coefficient of volume expansion (αv) is three times the coefficient of linear expansion (αl), as αv = 3αl (Section 10.5). As per NCERT, applying relevant law/formula with correct units and sign convention leads to αv\=3αl. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.

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