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 rod, when heated from 0^(@)C to 50^(@)C, expands by 1.0 mm. Another

1.	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 …………….. .
Answer» 0.5 mm 1.0 mm 2.0 mm 4.0 mm Solution :`Deltal=l_(0)alphaDeltat` `(Deltal_(2))/(Deltal_(1))=(2l_(o)Deltat_(2))/(l_(o)Deltat_(1))RARR (2xx25)/(50)xx1.0 rArr Deltal_(2)=1.0` mm