Q. The coefficient of superficial (area) expansion is approximately __________ the coefficient of linear expansion.

सतही (क्षेत्र) विस्तार का गुणांक रैखिक विस्तार के गुणांक के लगभग __________ है।

A
Half
आधा
B
Double
दोहरा
C
Triple
ट्रिपल
D
Same as
के समान

Explanation

For small expansions, the coefficient of superficial (or areal) expansion (β) is approximately:

β≈2α\beta \approx 2\alpha

Where α is the coefficient of linear expansion. This relationship exists because expansion occurs in two dimensions (length and breadth), so the effect is about twice as large.

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