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A rod, when heated from 0°C to 50°C, expands by 1.0 mm. Another rod, twice as long as the first at 0°C and of the same material, is heated from 0°C to 25°C. The second rod will expand by …… 

(a) 0.5 mm 

(b) 1.0 mm 

(c) 2.0 mm 

(d) 4.0 mm

1 Answer

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Best answer

Correct answer is (b) 1.0 mm

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