the coefficient of volumetric expansion of mercury is 18x10-5/°C a thermometer bulb has a volume 10-6m3 and cross section of stem is of 0.004cm2 assuming that bulb is filled with mercury at 0°C the length of the mercury column at 100°C is ?
Asked by निकोदिमुस
3rd February 2018,
9:29 PM
Answered by Expert
Answer:
Initial volume of mergury, V0 = 10-6 m3
volume expansion at 100ºC = V0 β 100 = 10-6 ×18 ×10-5 ×100= 18×10-9 m3
β is volume expansion coefficient
length of mercury column = change in volume / cross section = 18×10-9 / 4 × 10-7 = 4.5 × 10-2 m = 4.5 cm
Answered by Expert
5th February 2018,
12:56 PM
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