Q.

A glass bulb of volume 250 c.c is completely filled with mercury at 200C. The temperature of the system is raised to 1000C. If the coefficient of linear expansion of glass is 9×10–6/0C and coefficient of absolute expansion of mercury is 1.8×10–4/0C, the volume of mercury that overflows is nearly

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a

2.5 c.c

b

25 c.c

c

3.06 c.c

d

30.6 c.c

answer is A.

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Detailed Solution

γa=ΔVVΔt;γR3α=ΔVVΔt1.8×1043×9×106=ΔV250×80;ΔV=3.1cc

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